Physics Help and Math Help - Physics Forums > Physics > Quantum Physics

1. goldstein schodinger's equation Lagragian problem.
2. velocity operator inconsistency and discrete particle
3. Decoherence and State Vector Reduction
4. [Q]Momentum eigenstate normailization
5. closure rule
6. superposition of eigenstates in QM
7. Scattering and bound states
8. The state of a particle changes when viewed
9. spacetime in subatomic level
10. Quantum Computer Qubits
11. Wave functions
12. Question about delayed choice quantum eraser
13. I am newb please explain this about Electrons
14. Gaussian Wavepackets
15. Quantum world and time
16. reference frames?
17. commutator in QM vs. Lie brackets in DG
18. matter/antimatter asymmetry
19. Quantum tunneling
20. velocity of electrons
21. Dirac theory
22. Parametric down conversion
23. ESSW and Hiley's papers
24. Dirac Delta function
25. EPR paradox
26. Is the singlet state just a special case of mixture?
27. Gauge Boson Propagators in Spontaneously Broken Gauge Theories
28. particle-wave duality
29. Dipole moment operator.
30. quantum computing
31. Commuting creation and annihilation operators
32. Pauli matrices
33. Planck's law and ultraviolet catastrophe
34. Wick rotation
35. Wavefunction of a 2-particle system.
36. Friction at the quantum level
37. quantum suicide
38. Longest photon wavelength observed?
39. Spin from QM and SR?
40. How to dertermine the Hamiltonian matrix
41. Ground State Energy of an Electron
42. Transformation of energy space to momentum space
43. What is a Mixed State?
44. QM Notation questions
45. Decoherence and entropy
46. energy eigenstates
47. Resonance states and complex energies
48. Calculation of scattering amplitude ratio for two different angles
49. show me the wave function
50. collisions in QM
51. Eigenkets of a function of a hermitian operator
52. Crossing nodes of wavefunction...
53. Paradox seemingly violating relativity
54. Solutions of TISE - is it all about groping in the dark?
55. Wave packet conceptual question
56. Classical Explanation for Photoelectric Effect
57. Quantum Harmonic Oscillator
58. Entanglement and the double slit experiment
59. Holevo Additivity.
60. Force on the walls of a rectangular potential box exerted by a particle inside it
61. why does spin go?
62. PDC Type I: 1+1=3?
63. Feynman Diagram's
64. What is a virtual particle?
65. Particle & Anti-Particle Question
66. Basic Double Slit Question
67. refraction due to attractive potential
68. Off the mass shell and external fields
69. Bound states for a half harmonic oscillator
70. Dimension of Hilbert Space in Quantum Mechanics
71. integral over an operator
72. faster then the speed of light
73. energy
74. Hermitian operator
75. The necessity of the 2nd quantization?
76. how to get QFT operator expectation values?
77. Dimensions and the Generating Functional
78. difference between ionization energy and photoelectric effect?
79. The photon vs Maxwell's Equations
80. Quick question: 4 gradient
81. Is light an electromagnetic radiation. If so< then isn't it casued by....
82. Variational principle convergence
83. Proton-electron interactions interms of photons
84. Purely imaginary bound state wave functions?
85. The "Borderworld" between Quantum and Classical Physics
86. what is retrocausality?
87. how to calculate the many-body wavefunction
88. How To Entangle Particles?
89. Coupled quantum harmonic oscillators
90. Non-covariant parts of the propagator?
91. Double-slit experiment - a couple of questions
92. HELP! Can you find an electron in the exact middle of an S orbital?
93. Fermi's Golden Rule and Density of States
94. Heisenberg Uncertainty Principal with regards to electron orbits
95. What is light?
96. What part of the atom creates light??
97. Compton scattering elastic?
98. Canonical quantization with constraints
99. could we do QM without time evolution ??
100. conformal dimension of a scalar function?
101. Gurtzwiller formula
102. 2d Electron Gas
103. PBS on entanglement
104. Normalizing the Schrödinger Equation
105. Coincidence and Single Rate detection in Quantum Eraser experiments
106. Encryption v.s. quantum computers
107. Proof of a commutator algebra exp(A)exp(B)=exp(B)exp(A)exp([A,B])
108. "equating" the uncertainty relations?
109. what is quantum physics?
110. What if V(x) is complex?
111. Non-commutative Phase space
112. How does one emit a single photon?
113. Proof that the eigenfunctions of a self-adjoint operator form a complete set.
114. frequency
115. densely defined operators of Fock space
116. Momentum in x-basis?
117. Orbiting photon pairs
118. Basic QM question: Why do we describe free particles using Aexp(ikx) ?
119. Verifying a simple QFT derivation in Peskin's
120. Spread fo wavefunctions - filling the universe?
121. Is interference always present in a single slit setup?
122. Density of states and Charging prob....
123. 2deg
124. should we think a free particle as a particle in an infinitely big box?
125. Testing if the momentum operator is Hermitian
126. Exclusion principle in quantum gasses
127. Simple QM question
128. Imaginary shifts in QFT
129. Gravity Propagation Experiment.
130. questions on Feynman's view on Double slit experiment
131. Differing formulae for power emission
132. ground state energy of hydrogen atom
133. Why 3n-dimensional function?
134. Relativistic Quantum Mechanics
135. matter waves as standing waves
136. Wave function in momentum representation
137. eigen function, eigen value, eigen vector
138. Semiconductor Band Gap
139. Forrest Gump meets the Elitzur-Vaidman bomb tester
140. particle-only description of single-photon double-slit experiments
141. Single photon and the double slit
142. On General Measure of Entanglement
143. Question on Time Reversal and Degeneracy
144. Integral of a delta function from -infinity to 0 or 0 to +infinity
145. transpose of Grassmanian variables
146. Electron interference in double-slit experiment
147. antimatter from time-traveling electrons
148. E,H and wave function
149. Weak interaction and helicity
150. Schrodinger Equation and Energy Quantization
151. Spin sum
152. Group Theroy/QM
153. Bohmian velocity measurable?
154. theory of electron spin
155. Riemann-Hilbert space
156. Delta function of a function with multiple zeros
157. Current work in QCD
158. (1/2,1/2) representation and photon
159. Numerical solution of Schrodinger equation
160. time delay for evanescent wave to spread (photon tunnelling)
161. Superstring Field / Unified Field
162. Relation between potential and bound states in Schrodinger equation.
163. Greiner's QCD book
164. Electron Dephasing
165. Wiens scaling law
166. Come One, Come All, and Cast Your Vote
167. how short can a pulse be?
168. Permuting Qubits
169. Quantum Data:Theoretical Requirements
170. Harmonic Oscillator & Schrodinger
171. please forgive my ignorance?
172. Are fields and uncertainty ubiquitous?
173. Continuing entanglement after first measurement
174. Goldstone bosons 1st order phase transition
175. Schwinger-Dyson equation help
176. Fock state
177. Obama has chosen his VP, the universe has decohered/collapsed
178. Zurek's paper
179. Easy (I think) quantum non-locality question for the experts
180. Conservation of momentum and how to entangle
181. Why the need to quantize?
182. What proof is there that light has zero mass??
183. Double slit experiment - QM or wave?
184. references for quantum chromodynamics
185. MWI and FTL Communication Possibilities
186. Continuing Dopfer discussion
187. gross pitaevskii infinite well
188. What is a positive definite Hamiltonian?
189. how to convert m meter into recoils
190. QM GR and the vaccum
191. Photons as waves
192. Where do the free electrons go and how do I find the energy level?
193. Spontaneous breaking of the local gauge symmetry(such as that in superconductors)?
194. Best possible test which differentiates qubits
195. Bohmian "surreal" trajectories
196. Distribution of speeds in a molecular beam.
197. momentum flow in QED vertex
198. Is the eigenstates of p right?
199. The photoelectric effect
200. Superluminal Communication
201. Is the Conservation of Energy ever violated?
202. euclidean dirac operator
203. Broken Symmetries (Weinberg p215)
204. When does entanglement end?
205. Problem understanding a statement in Bose Statistics
206. klein-gordan eqn
207. What happens to qubits if Swap Test fails?
208. weak "force"
209. Changing the spin of a Quantum particle
210. Dirac Equation question
211. dimensional regularization
212. diagramatic perturbative expansion of QCD
213. Running couplings
214. Geneva University speed of entanglement results
215. Effect before Cause: Is it possible?
216. Doesn't QM allow for FTL travel?
217. momentum cut-off acepted in renormalization ?
218. photon experiment
219. Energy levels in finite 1d well
220. Scalar Electromagnetics
221. knock the uncertainty down!
222. Energy of Single Photon
223. Field Operators in Klein-Gordon theory
224. Uncollapsing a wavefunction (demo in low temp cond matter lab)
225. mass shell
226. Time propagation
227. Quantum particle empirical status
228. Graviton and photon point particles in reality
229. Fourier Transform of a wavefunction
230. LHC & Chronons
231. basic questions on quantum scattering
232. Feynman slash notation
233. Quantum well levels
234. Theories of Light
235. how small does sub-atomic universe go?
236. Feyman Diagram - Represent QED model(s)?
237. entanglement and polarization
238. Basic question about velocities of particles
239. mean field indeces
240. number of distinct diagrams.
241. Rayleigh one-two photon, dipole approx
242. Why Irreducibel Representations?
243. group and phase velocity
244. Two interacting electrons in 1D infinite well
245. Disconnected diagram Feynman rules momentum space
246. Proof of state "collapse?
247. kinetic lagrangian for non-abelian gauge theories
248. Spin & the Fermi Sea
249. Practical applications of QM
250. Feynman's Interference Experiment: Detector versus Photon Source
251. How do you entangle photons?
252. My First Double Slit Experiment
253. Logic and causality???
254. stern gerlach J=1 problem
255. [SOLVED] Expressing a matrix in the eigenbasis of another..in QM
256. quantum mechanics vs general relativity
257. Diagonalizing a square matrix with degenerate eigenvalues
258. Help understanding Nuclear physics concepts
259. Davisson & Germer experiment question
260. Vacuum state of the Klein-Gordon field
261. Photons through Glass
262. Quantum Entanglement and retrocausality
263. Magnetic Quantum number
264. Bohr's H-Atom
265. Distance between atoms
266. Bras and Kets
267. Definition of Delta as a Sum
268. Coherent States of the Harmonic Oscillator
269. Physics Presentation
270. If we had a microscope
271. Caution: may-be Rumor
272. Basic wave equation question
273. Photon Helicity
274. Quantum computers, quick question
275. Finite Well Iterative Process
276. Some Bohm questions
277. Is there any reason the Universe must have a wave function?
278. Quantum Aspects Of Equations For Motion
279. Wave function of a system
280. Outcome unknown
281. Weak force
282. why spinor bec is called ''spinor bec''?
283. Renormalization
284. Hamiltonian of a system
285. Fermions (HELP PLEASE)
286. Massless free field equation --> Maxwell's eqn.
287. HUP inside the atom
288. energy in packets
289. density operator
290. Double slit
291. Dirac delta spherical potential
292. ghosts
293. derivative inside, outside time ordering
294. Line Spectra Question
295. Questions about some material from Dirac
296. Particle-wave function
297. Differentiation of an exponential with operators (Peskin p.84)
298. Derive schrodinger equatiom from variational principle?
299. Picture of Entanglement
300. Measurement and Stern Gerlach Experiments...review articles?
301. Jordan-Wigner transformation
302. Renormalisability and spin?
303. A question of phase density
304. Chirality and helicity
305. Entanglement
306. Quantum computing and Nanoscale "CAD"
307. Detecting Single Photon Energy
308. Charles Stross and Quantum Teleportation
309. Pair Annihilation
310. Gravity and its effect on particles/molecules and bonds.
311. Spin Addition
312. Quantum Teleporation and Nuclear Chemistry
313. quantum attraction by exchange of particles
314. Construction of SU(3) multipletts, implication of Gell-Mann-Nishijima
315. basic question on electron, ion and photon excitation
316. on current algebras
317. Renormalization in Fluidodynamics
318. Pair Production
319. Projection postulate - can it be verified?
320. Is there a description of collapse in QFT ?
321. Schroedinger's cat
322. Commuting Operators in Sequential Stern Gerlach Experiment
323. Is probability a Quantum Observable ?
324. if photons have no mass, then how can they travel the speed of light?
325. Pauli exclusion principle question
326. A non-normalized state
327. Harmonic Oscillator
328. what the state of Quantum mechanics (QM) is?
329. Polarization of Light
330. about the floquet theorem
331. Mach-Zehnder Interferometer at Wiki Question
332. Photons Detector not yielding "which-path" info.
333. QED Lagrangian lead to self-interaction?
334. Differentiating Qubits
335. Pauli-Lubanski
336. Quantum Digital Signature
337. Laser Power Increase?
338. Planck's Constant...."h"
339. Plasmons and Van der Waals friction
340. Psi function of a photon?
341. R. Slansky, Group theory for unified model building
342. Dimensional Regularization of an Integral
343. Time depending quantum solution
344. Exclusion principle question
345. Coexistence of QT and Relativity
346. particle in a 1-D box
347. Normal ordering and Wick contraction?
348. Formulation of Non-relativistic QED
349. Feynman's QED Lectures: Questions about partial reflection
350. Photon absorption process
351. QFT and local gauge invariance
352. potential well& wave packet
353. QFT poincare generator
354. counter example to the Bloch's theorem?
355. Does the uncertainty principle break symmetry?
356. Questions about Peskin QFT
357. Number of components of Dirac spinor in arbitrary dimensions.
358. The dangers of heuristic reasoning
359. How do photons interfere with each other/themselves?
360. Why the Born Rule?
361. laser/moving mirror
362. Parity vs. group theory???
363. Field operators - how do they work?
364. Truly Random?
365. light not polarized
366. Photoemission in diatomic molecules
367. question about refraction experiments
368. rotating Bose gases, quantum vortices
369. Spooky entanglement
370. Photon spin - experimental evidence
371. Working with Dirac matrices
372. Does a photon bounce?
373. diagonal polarizator
374. Stark Effect using first order variation theory.
375. Singlets and gauge invariance
376. Black body radiation
377. DIY double-slit with strange results
378. Feynman's perspective on negative energy states and pair creation
379. Electrons
380. <p^(3/2)>
381. Lagrangians in Quantum Mechanics
382. what happens
383. Heisenbergs Uncertainty Principle
384. Feynman's perspective on the double slit...
385. Photons are massless?
386. FAQ - "Do Photons Move Slower in a Solid Medium?"
387. Negative energy in Dirac equation
388. pauli exclusion principle
389. Do protons and neutrons have a wavefunctions?
390. Does anyone know what is used to calculate the atomic orbitals such as s,p,d and f?
391. Spectral Lines - How and Why?
392. A paradox in Planck's Law?
393. vectors in Hilbert space
394. virtual particles
395. coarse-grained entropy and heterogeneity?
396. Help
397. Massless Schrödinger equation...
398. Exchange potential operator?
399. Degenerate matter total energy...
400. Particle in potential well
401. Random symmetry breakings
402. How to get the prefactor for the Planck Distribution
403. What is the smallest Quantum of Energy?
404. 4-momentum in relativistic QM
405. Orthogonal Integral
406. Some Confusion with Path Integrals
407. negative energy?
408. Quantum Zeno effect
409. Particles and Fields – a neverending story...
410. What's wrong with Heisenberg's microscope?
411. The physical meaning of Schrödinger's equation
412. Expectation Value
413. The Mach-Zehnder interferometer experiment
414. Are antiparticles visible?
415. How close are mankind to creating a quantum computer?
416. The Uncertainty Principle
417. Viruses and Quantum Mechanical Spreading
418. Looking for resources to do with energy transfer.
419. Quantum tunneling
420. Uncertainity Principle
421. Matter Waves As Standing Waves
422. 3.) Probability
423. Wave Function Zero At Infinity?
424. compton effect
425. Very basic questions - Hamiltonian
426. Difference between Mixed State and Superposition
427. Total Angular Momentum of Many Particles
428. Graviton energy and frequency/wavelength?
429. linearity of momentum operator
430. Paradox?
431. Special relativity and QM
432. Separating Hamiltonian functions. Helium atom.
433. The Principle of Least Action in Quantum Physics
434. Shifting Constraints in the Particle in a Box System
435. Feynman diagrams
436. basic understanding
437. Grover's algorithm on entangled states
438. invariant measures
439. The Photoelectric Effect, Photon Duality, and The Double-Slit Experiment
440. Trying to plot de Broglie standing wave.
441. How to union the path
442. Bras and Kets and Tensors
443. Electromagentic Field vs. Gravity Field
444. Change of Basis for Spin
445. QM vs. SR
446. Angular Momentum Question
447. Quick Braket Questions
448. macroscopic quantum mechanics
449. What kind of wave is associated with particles , in wave particle duality?
450. Hamiltonian in terms of ladders, question.
451. 3.)tunnel and photoelectric effects
452. 2.)energy Density Of Radiations
453. 1)yukawa Potential
454. Observation and the Double Slit Expt
455. Mean lifetime of a particle (quantum)
456. phase velocity!!!!
457. Can vacuum be considered as excitable medium?
458. does light have mass?
459. Abstract Schrödinger's equation in QFT
460. point entity?
461. Spectral Zeta function
462. Operator and Commutor Question
463. Another photoelectric effect related question
464. Measuring Quantum State
465. Difference Equation
466. Bessel Parseval Relation?
467. Can one photon be anywhere in Universe?
468. Quick Fourier-Like Question
469. What is the operator for velocity in spherical coordinates?
470. Question regarding Schroedinger's Equation
471. QFT Conundrum
472. Plank's constant: What is it?
473. Normalisation
474. strange definition of regularization of Operators
475. why do particles annhillate with their particles???
476. Borrowing energy?
477. Quantum State
478. Heisenbergs Uncertainty for light
479. Fields and energy question
480. help about the exchange energy
481. Beginner to Braket State Vectors
482. recognizing a product of two 3d rotations (matrices)
483. Last step of a Schrodinger derivation
484. Dopler Shift and Photon Number
485. Why do different frequency EM Waves behave different ?
486. Propagator/transition amplitude through intermediate integrations
487. technical question about Nikolic' Quantum Myths
488. Uncertainty Principle
489. Argument about inteference experiments : help me win!
490. Wave Function
491. Ladder Operator/hermiticity
492. How abou the hidden variable theory?
493. UV versus IR temp.
494. What if planck's constant changed?
495. Weak field tensor
496. And God said .... ?
497. Destroying interference pattern of classical waves
498. How to prove Coleman's formula for the ratio of two determinants?
499. The Interpretation of Quantum Mechanics
500. QM calculation of vacuum energy
501. Frequency- What is it?
502. Photoelectric effect on the capacitor
503. Quantum Foam Clarification
504. Renormalisation Example
505. Why did Schrodinger call his equation eigenvalue problem?
506. Eigenstates, Eigenblahs, and Eigenpoofs? HELP O.O
507. density matrix
508. Stern Gerlach Gradient Field Strength
509. psi^4 theory
510. Question on quadratic fluctuations in the path integral formalism
511. the title?? (one of Dirac's books)
512. Red Light?
513. tunneling through a PE barrier
514. Physical Meaning
515. A particle in two boxes
516. Query
517. The speed of light, gravity, strong force, weak force
518. Temperature and quantum physics
519. Photon theory?
520. Another physical question
521. Fundamental Question
522. electron two slit experiment with gradual "collapse"?
523. Natural Eigenbasis composite 2 X Spin 1/2 system
524. Planck's Constant
525. virtual particles
526. The physical meaning of Pauli Spin Matrices
527. A practical application of quantum mechanics
528. Let's get it right about Electron Waves
529. time scale of photon absorption in electron
530. Quantum Physics, when is spin-orbit coupling necessary?
531. Density matrix of a qubit
532. what is the advantage of the truncated wigner approximation?
533. energy levels in a potential well
534. Classical -> Quantum Generator of Translation
535. Feynman- Radiation Resistance
536. Hamiltonian & Degeneracy: Conditions
537. Wavefunction collapse ==> increase in entropy??
538. Can Maxwell's equations describe a single photon?
539. Interaction term in Hamiltonian !!!
540. Compton scattering in ultrarelativistic limit
541. Bound states in 1D potentials
542. why permeability equal to unity?
543. Many Worlds experimental evidence
544. The phase velocity of laser light
545. questions about chaos.
546. Spontaneous symmetry breaking
547. The shape of a heap of sand turns flat after being kicked...
548. Equilibrium spacing
549. Particle in an infinite potential well, showing the uncertainty in x
550. Change the state of system
551. spreading wavepacket
552. Complex Conjugate of Fourier Transform
553. double slit electron experiment
554. probability interpretation of QM
555. Spin 3/2 Rotation Matrices
556. About Schrodinger eq. and the potential step case with E = V0
557. Probability amplitudes, de Broglie and Schrödinger
558. Qubits
559. Simple example of the collapse of the wavefunction?
560. Boltzmann Factor in QM Language
561. When can we ignore the delta function in th Feynman rules?
562. Degrees of Freedom
563. Wave-particle duality
564. Uncertainty principle
565. Schrodinger Equation Question
566. Where does phi go in the probability density for hydrogen?
567. Hamiltonian Matrix
568. quantisation of EM field
569. Schrodinger's cat
570. Quantum Entanglement!!
571. Virtual Photons
572. Hamiltonian and Lagrange density
573. "standard perturbation theory" - what exactly is meant?
574. Why Angular momentum is important?
575. Effect preceding cause?
576. Possible to make 2 beams of light cancel?
577. Light, Vacuum, Speed, and Measurements
578. Magnetic corkscrews?
579. Radial Momentum Hermitian?
580. Microscopy using photons versus electrons
581. Schrodingers Cat and time evolution
582. Explicit expressions for creation/annihilation operator of the free scalar field
583. structure of an atom
584. Commutator relations for the Ehrenfest Theorem
585. Speed of Probability Waves?
586. Klein-Gordon Momentum Question
587. Effective action
588. Quantum Calculus?
589. Qft question (Srednicki)
590. Photon Momentum
591. Energy and fields
592. String stars instead of black holes?
593. Photon Pairs - Can photons travel in pairs?
594. where do the electrons go??
595. Tunneling Electrons
596. Vacuum Photocell help
597. Quantum Physics
598. Coleman's QFT lectures on video!!!
599. energy changes of a particle tunneling through a barrier
600. What is density matrix of one on two entangled qubits?
601. angular momen. conserv
602. Is it possible to determine if a photon is entangled?
603. Moller scatering
604. Can expectation value of observables be imaginary?
605. Hawking radiation - please explain
606. Clone states, part 2
607. Written in the skies: why quantum mechanics might be wrong
608. potential commutes with position?
609. Cloning quantum states
610. Planck's constant and the matter constituents
611. Quantum myth 4: The only reality is the measured reality
612. Lagrangian Gauge Transformation Q
613. klein gordon equation
614. Doppler Shift-Matter?
615. Information Paradox confirmed?
616. Links Between Electromagnetic, Electro Static and Gravitational Fields?
617. Electron Precession versus Proton Precession in a Magnetometer?
618. Renormalization - a dippy process - R. Feynman
619. Scale Relativity
620. Heisenberg equation of motion for fermions?
621. the speed of light as an absolute max
622. [SOLVED] Annihilation, perhaps a defination problem
623. [SOLVED] Mandl and Shaw 5.1
624. Possible Explanation for Quantum Mechanics?
625. Hearing light
626. Delayed choice quantum eraser
627. A particle in two boxes
628. E=hw
629. Quantum Tunneling in Atoms
630. Time dependant Hamiltonian
631. Equation calculating the amplitude of a particle
632. Neutron precession?
633. Question about Dirac form...
634. [SOLVED] Mandl and Shaw 4.3
635. Potential well with two electrons
636. a semiclassical regime
637. Quantum Teleportation
638. How do classical and quantum mesh?
639. Is a squeezed state keeping as a squeezed state in its evolution?
640. Question about the helicity operator
641. How to predict the frequency of NMR spectrum
642. lagrange multiplier for bose- einstein stats
643. Which interpretation best explains the classical limit?
644. What is the electric field around a quantum particle?
645. Klein-Gordon Approximation Question
646. Back Correcting the Uncertaininty Principle?
647. Some thought
648. Spatial representation of field commutator
649. About Fermi energy and Fermi temperature
650. how does classical fail in here...
651. Quantum Physics for a portable game console
652. Schwinger Quantum action
653. the expectation of 'z' and 'x+iy'
654. Inverse Operator
655. 3 space and 1 time
656. Excited state of an atom
657. Formalisms (in fidelity calculation for quantum teleportation)
658. photon as composite of electron and positron
659. Light propulsion
660. Physicists and their pet theories
661. Tapping the Zero Point energy
662. is angular momentum always quantized?
663. About scattering and bound states
664. Can someone explain the idea of degeneracy of orbitals?
665. pure qubit question
666. Time derivate of the Expectation value for the product of position and momentum ops
667. Causal Evolution of Wave Function and Gravity
668. quantum myth 3: nature is fundamentally random
669. [SOLVED] Baker, Campbell, Hausdorff and all that
670. black body radiation
671. berry phase in degenerare case
672. Transition Probability for a Laser system
673. Quantum Mechanics and Determinism
674. Bose Condensate
675. [SOLVED] Mandl and Shaw 2.5
676. Time translation in the heisenberg picture?
677. dual gauge curvature
678. Novikov self-consistency principle
679. waveequation for relativistic particle
680. Schwinger-Dyson equations for Quantum Gravity
681. [SOLVED] Mandl and Shaw 2.3
682. Dirac equation and general covariance
683. What would happen to pauli exclusion principle
684. Heisenburg and polarization...
685. Dual of Maxwell tensor as gauge curvature
686. A hamiltonial question...
687. Uniqueness of quantization of Dirac field
688. Inner product
689. question on UV and IR divergences
690. Electrostrong Force
691. Uncertainty principle puzzle
692. Why does quantum entanglement not allow ftl communication
693. Plank time, Plank length
694. wave-particle duality/double slit experiment
695. Particle octet
696. Is pauli exclusion principle a force
697. help with simple Einstein photon equation
698. Heisenberg Undertainty Principle
699. Quantum myth 2. time-energy uncertainty
700. A question on wave-particle duality
701. wave equation -- vector notation
702. Photoelectric emission
703. Nonlocality - fact of nature
704. order of interference
705. about the origen of the fundamental theories
706. Photons - the smallest building block?
707. lower limit for speed
708. antiparticle and particle annihilation
709. wavefunction of relativistic free particle
710. Project Idea? [sadface]
711. Electromagnetic radiation
712. Many worlds question
713. vacuum modes
714. Pressure of an electron gas at 0K
715. many body problem --> non-interacting particles
716. Heisenberg picture
717. Many-Worlds
718. Questions on neutrinos
719. proof that (p + ix) operator is non-hermitian (easy)
720. The Hartree Approximation
721. Solving Hamiltonian with chain of charge centers?
722. Quantum energy levels
723. dimensionality
724. How important is experience in QM?
725. Quantum myth 1. wave-particle duality
726. Existence of Virtual Particles
727. Dirac's equation and positron
728. Interference between photons that never meet
729. solving schrodingers numerically
730. Atomic Radius
731. momentum operator in Schrodinger equation
732. renormalizability
733. discrete spacetime means discrete momentum ??
734. [SOLVED] Evaluate the Klein-Gordon action
735. confusing HUP
736. the difference between BOSONS and FERMIONS
737. Particle Spin
738. The necessity of time-dependence in making approximations of the H2+ molecule
739. Speculative Physics Periodical
740. uncertainty principle and photon
741. Preferred basis and prereduction of density matrices
742. Derivation of current density in quantum mechanics
743. [SOLVED] A question about Photoelectric Effect
744. Why forces are modeled as virtual particles in quantum mechanics?
745. Plane waves not physical states?
746. Backward causation intepretation
747. heisenberg
748. Calculate something with QFT - I dare you
749. Question about density matrices
750. [SOLVED] Representation of j=1 rotation matrix
751. Creation/annihilation operators
752. Atomic Oscillations
753. Is quantum theory really necessary?
754. bra-ket notation in latex
755. Qm => Mwi?
756. classical forces and covalent bonding
757. Double slit experiment / Quantum interferometer
758. Franck-Hertz (my head) Experiment
759. Photovoltaic and Superconductivity
760. What if Cramer's FTL Experiment Worked?
761. Local Gauge Symmetry ??
762. quantum thoughts
763. About mixed state and pure state
764. Intrinsic Spin
765. Any bohmian's here?
766. Uncertainty principle and vacuum fluctuations
767. Question about teleportation...
768. Klein-Gordon equation for electro-magnetic field?
769. Time evolution and the Dirac Equation
770. Question about Planck's constant and De Broglie
771. [SOLVED] Momentum-space detection of an Electron (EWP)
772. How do we measure particle momentum?
773. Double Slit Interference.
774. Mwi
775. 2nd quantization
776. Quantum Non-Locality Subspace Radio
777. Virtual Particles
778. Uncertainty Principle and Single-Slit Diffraction
779. unification 'theory' (small energy)
780. [SOLVED] Silly Quantum Physics questions
781. Photons - Wavelength and Wavepackets
782. Interactions that cause entanglement
783. Questions on Electron Orbitals, Wave Packets, and Coherent States
784. Nine formulations of Quantum Mechanics
785. Bilinear covariants
786. Electron State Transistion
787. Why is Schrodinger's Cat only a thought experiment?
788. Rotation of operators
789. Inverse Foourier Transform
790. Quantum Mechanics for the 'lay person'
791. positronium ground state
792. Variation on Dopfer Experiment - Why Won't This Work?
793. Vacuum fluctuations
794. Schrodinger equation graph help
795. What is a plane wave?
796. some questions about ion trap.
797. Interference in EM waves
798. Delayed choice in the Copenhagen interpretation
799. Probability of staying in same state after time-dep perturbation?
800. Why equal-time commutators?
801. Entanglement Explained with Epistomological Probability Theory
802. Entanglement + Fusion: need a visual metaphor
803. Superliminal Information Transfer
804. Elementary particles and fermat's principle
805. Energy levels, de Broglie
806. [SOLVED] Quantum Field Theory: Field Operators and Lorentz invariance
807. Lasers
808. Wavefunctions
809. Electron and linear potential
810. [SOLVED] light diffraction in plasma
811. Frequency of a particle? Frequency of what?
812. No photon wavefunction?
813. Electrons and Photons
814. hawking - vacuum fluctuations
815. Wigner-Eckart theorem
816. Difference between interaction and interference of QM systems
817. matter-antimatter annihilation
818. Many Worlds and Many Minds
819. Help about concurrence of a pure state!
820. Momentum from position state vector
821. understanding light
822. Variability of Zero Point ?
823. Underlyinig Unity
824. Schrodinger's Equation validity for relativistic particles
825. Dislocation density
826. Static Charge Photons
827. photoelectric effect
828. confusion about the contour green's function
829. Kinda new to this stuff, is there anything that makes electrons more...
830. Clarification
831. Rabi oscillations and spin 1/2 systems.
832. Jeans' theorem
833. where do fermion properties come from?
834. Atomic term symbols
835. Weak Measurements
836. Experimental verification of QFT?
837. hawking radiation
838. a thesis needed
839. Where is my mistake ?
840. Simple Quantum Information Question
841. Stimulated emission. Energy of the photon inducing the emission.
842. Partial Mossbauer effect—Why not?
843. what is ''phase diffusion''?
844. more ladder operators
845. Do photons collide with each other like any other massive object?
846. Eigenstates: What would happen if you had a laser aimed at a mirror 45 degrees.......
847. Schroedinger Equation (The original article)
848. Computational project in quantum physics
849. Gamow Energy
850. Quantum computer status?
851. What if the Bohmian model turned out to be correct?
852. uncertainty principle and double-slit interference?
853. Is photon emission spherical or linear?
854. Basic Questions
855. Momentum to Energy Representation in 3D Box
856. Question about the notation in Quantum Physics
857. a linear theory?
858. How can you test if a bipartite system is entangled?
859. lambda=h/(mv)
860. What exactly is a particle -- in particular in constrast to a wave
861. Faster than Light?
862. Zeros of the partition function
863. Beer-Lambert law
864. Conceptual question about wavefunctions/momentum
865. Information loss paradox
866. Dirac Delta Function Potential (One Dimension)
867. does every observable commute with the hamiltonian?
868. Angular dependence in QM?
869. Quantum coherence of light
870. A solution to time dependent SE but not Time independent SE??
871. Wave/particle duality: what exactly is a particle?
872. Do photons bounce off of each other?
873. Polarization, then detection: collapse when?
874. a linear theory (quantum theory)?
875. Questions on e/m wave longevity
876. Learning quantum physics.
877. Partial Wave Unitarity ??
878. Observations
879. FTL communication
880. LS-coupled two-body state
881. When does Hawking radiation start?
882. time-evolution operator
883. photon's age? consider two interacting photons in the EPR effect
884. Oberver Collapsing Wave funcions vs. Wheeler-Feynman Absorber
885. Pauli Exclusion Principle
886. Two questions concerning scattering in QED
887. EPR Paradox
888. Operator transformation
889. Electron precession angle
890. Path integrals and supposed sum over paths
891. Fine structure constant
892. wave packets and particles
893. time operator
894. Second Quantization and Field Operators
895. virtual particle energy-momentum
896. Photoelectric effect creating optical solitons
897. Wha are the advantages of Schwinger Quantum action ?
898. Parity
899. Connection between Quantum and Classical worlds
900. really a virtual particle sea?
901. Squeezed gaussian expectation
902. Local measurements on an entangled pair. (My understanding)
903. Relation between a measurement and the operators
904. infinite quantum wave function
905. Multiparticle Schrodinger Equations
906. Different MWinterpretations
907. Two body problem of Hidrogen Atom
908. Transformations of free fields
909. Holographic quantum computing
910. Groups in QM
911. Non-Physicist looking for an answer
912. Rotation Invariant of Sch. Equation and [Lx,H]=0] ??
913. Basic Bell
914. Understanding the Uncertainty Principle
915. Quantum computations, irreversibility, unitarity
916. Question about Deriving the de Broglie Wavelength
917. Are the Quantum Numbers real ?
918. A question about the uncertainty principle.
919. A common sense objection to tunneling?
920. Physicists Successfully Store and Retrieve Nothing
921. Electron Magnetic Moment
922. Foldy-Wouthusien velocity operator
923. Hydrogen binding energies
924. [SOLVED] The Meaning of Schrodingers Equation - In English
925. Spin of the sress-energy tensor in d=2
926. berry's phase of bloch oscillation
927. condition of adiabaticity
928. Heisenberg's equation of motion
929. randomly emit of photon
930. Finding CSCO? a complete set of commuting observables
931. functional theta function
932. Getting Involved In High School?
933. Charge In Schroedinger's Equation
934. Planck Constant Tends to Zero
935. Uncertainty principle
936. matrix connecting Sz diagonal basis to Sx diag basis
937. Minimum possible energy for a particle in a box
938. Quantum mechanics and ...the macroscopic universe .
939. what's the difference between them
940. Information RE The Double-Slit Experiment?
941. Commutation relations in relativistic quantum theory
942. Feynman propagator as distribution
943. About incompatibility and interference terms
944. Questions about Bell
945. QED coherence in matter
946. Waves are real waves or what?
947. what happed to the other, if one entangled particle is "destroyed"
948. energy unit
949. What is ansatz?
950. wave-particle duality
951. [SOLVED] One-particle irreducibles in P&amp;S
952. when do we use notion of effective mass
953. quantum randomness vs. "dice randomness"
954. Do waves and/or particles exist at all???
955. Quantum nonsense?
956. field screening in the electron
957. Electron filmed for first time ever
958. Electrons In Some Compounds 'Gain Weight' At Cold Temperatures
959. Question about the hermiticity of the momentum operator
960. Electron at 0k
961. Quicky on the Casimir Effect
962. Could old CRTs be re-rigged for Quantum Experiments?
963. Single electron interference pattern
964. Coupling fermions to a scalar field: Interpretation problem
965. Maximum size of a nucleus
966. X-ray tube emission?
967. Light, Current, & Magnetism Relationship?
968. Photons particles or waves
969. the idea behind renormalization group.
970. Can virtual particles appear ANYWHERE?
971. Commutation relation for L_3 and phi
972. Photoelectric effect
973. hydrogen molecular ion
974. Particle/Wave Question
975. What results when sound interacts with an Atom
976. Orthogonality
977. What is the inner product in state (ket/Hilbert) space.
978. Torsion Field Question from a total newbie
979. Quantum Foam Wormholes
980. back up a step, before Bell's theorem
981. Momentum as the generator of translation
982. Propagator - Hankel function - infinite? - Weinberg
983. The Doppler Effect- According to Quantum Mechanics
984. wave and particle confusion
985. phase in psi
986. End of electrons leaving metal
987. double potential well
988. Liouville representation
989. Outer product in Hilbert space
990. Appropriate Concepts in the Formulation of Quantum Mechanics
991. help with this semiclassical sum please.
992. hermitian adjoint of the time derivative?
993. Starting Place For Quantum Physics
994. Physical meaning of the 2 eigenfunctions of Free Particle
995. Fall into nucleus?
996. Filmmaker needs your help...
997. Commuting metric past Dirac spinors?
998. Dumb question about waves
999. LSZ formula help!
1000. dumb question about electrons?
1001. Visualisation of H2 molecule wavefuctions needed
1002. Quantum Computing
1003. Why there isn't "missing information" in QM
1004. Space/Time Entanglement?
1005. Help with this path integral.
1006. Quantum Hall Thruster? (QuantumHallEffect+HallThruster=?)
1007. apparent paradox
1008. Double Slit Experiment
1009. Hypothesis about Quantum Interference in Time
1010. Experimental distinction between states with one and two photons
1011. Scanning Tunnelling Microscope (STM)
1012. Many Worlds?
1013. Pauli Exclusion principle.
1014. How 'far' is far apart?
1015. problem with spin interprestation related to matrics
1016. Exercises and problems on QED and QFT ?
1017. Why don't electrons leave a negatively charged metal in air?
1018. Questions on the Copenhagen Interpretation
1019. The electromagnetic current vanishes identically in the Majorana case
1020. Have photons been isolated?
1021. Fermi-Dirac statistics valid for electron gas in metals?
1022. states
1023. Bohmian interpretation and schroedingers cat
1024. variational principles for Probabilities.
1025. perturbation theory.
1026. Lens as quantum eraser?
1027. Quantum Suicide
1028. Quantum of gravity
1029. Silly conceptual question
1030. Time-dependant Schrödinger Equation Help.
1031. summary of the key formula of QFT
1032. Does anything actually move?
1033. Fermi energy and diodes
1034. "quantum sensor" and units issue
1035. Metric tensor, infitesimal transformation
1036. Atomic Orbitals ?
1037. Example of observing without absorbing needed
1038. Degree of freedom ?
1039. Spin 1/2 vs Spin 2
1040. Quantum Interpretations history
1041. Exact solutions for a QFT
1042. Photon spin ?
1043. Magnetic Quantum no ?
1044. bb radiation
1045. Quantum of charge
1046. SU(3) symmetry and simple zeros of w. f.
1047. Classical analouge of electron spin ?
1048. Electron orbits
1049. Quantum theory of friction
1050. Restrictions on negative energy
1051. Representations of SU(2)
1052. Transition probabilities in H
1053. Quantum vacuum fluctuations
1054. electron in a well: energies are quantized or not?
1055. Max Born and probability waves
1056. Quantization of energy levels
1057. cardinality of bloch waves
1058. Space quantization of electron orbits ?
1059. Perturbation Theory
1060. Doublets Scalar Potential Question
1061. A question about nonlocality
1062. Generalized Quantum Mechanics
1063. Laser
1064. Quantum bouncing ball
1065. Afshar experiment questions - PROPONENTS only:P
1066. String Theory
1067. Planck's Radiation Formula
1068. Is time also quantized?
1069. Zee,p.236
1070. The nature of photons
1071. de Broglie thought experiment
1072. Size...of everything
1073. [SOLVED] Quantum Numbers
1074. quantum home experiments
1075. An important question please.
1076. coherent states
1077. posulates of quantum mechanics
1078. Microcausality in algebraic QFT
1079. Connection between Dyson's equation and Heisenberg equation of motion
1080. Four or Five fundamental forces
1081. The Observer Effect
1082. Relative Velocity & De Broglie's Theory
1083. Why Couldn't Einstein Accept Non-Locality?
1084. Black holes and particles
1085. success of SE simulations
1086. Breaking quantum entanglement ...
1087. The double slit experiment
1088. Using the energy of quantum oscillations
1089. Determining uncertanity from the wave equation
1090. Degree of divergence and dimensions of G
1091. Imagine
1092. Cutoff potential???
1093. Frequency of light???
1094. Quantization and fluid mechanics??
1095. 1-D Box. Paradox?
1096. A few quantum mechanics problems
1097. magnetic moment is an intrinsic property of elementary particles?
1098. Quantum entanglement in time
1099. Observables
1100. what is the difference between van der waals interaction and casimir interaction?
1101. Why/how electron spin conserved?
1102. Quantum rolling ball
1103. Will quantum computers ever be possible?
1104. Vaccum fluctuations???
1105. Fermion oscillator
1106. Quanta of massive vector fields
1107. Proposed Modification to Afshar's Experiment
1108. Brownian motion and the quantum scale.
1109. [SOLVED] Spin?
1110. OWI in MWI ?
1111. Maxwell distribution of kinetic energies
1112. Electron orbital angular momentum
1113. Compatability with 10^-33 cm
1114. Interpretations of QM- help on points!
1115. Access to classical papers
1116. De Broglie Waves and Complex Numbers
1117. In the footsteps of Young
1118. Spin Hamiltonian
1119. photons don't decay, right?
1120. Homonuclear diatomic molecule (N_2 and O_2)- question about magnetic quantum number
1121. Wave vs. Particle-Like Behavior
1122. Energies and frequencies
1123. Is It Possible?
1124. Pilot Waves, any thoughts?
1125. Uncertainty
1126. Photoelectric effect [doubt]
1127. Confusion about eigenstates and wavefunctions.
1128. quantum entanglement question
1129. Quantum mechanics
1130. Models of Photon
1131. Photon / Schrödinger equation
1132. Electromagnetic radiation
1133. why does electron have wave property
1134. Why replace Hamiltonian with operator?
1135. Schrödinger equation: eigen value or differential equation
1136. Eigenfunction, Eigenvalue, Wave Function and collapse
1137. What really is a photon?
1138. Does MWI Resolve Locality Problems with Entanglement?
1139. Quantum Mechanics 1D Harmonic Oscillator Simulator
1140. Mwi
1141. [Quick] States of interacting and non-interacting Hamiltonian
1142. Crazy photons
1143. Feynmann diagrams interpretation and diagramm symmetry order
1144. renormalization, infinitesimal charges?
1145. inelastic collision and ideal gas law
1146. Measurement
1147. relative-state or many worlds theroy
1148. Interaction term in path integral
1149. Quantum Physics
1150. un- uncertainity
1151. Statistical mechanics
1152. quantum fields are the basic constituents?
1153. Semantics of "Wave"
1154. path integral in momentum space
1155. spurion & symmetry
1156. Questions on Line Spectra, Orbitals and Radiation
1157. Entanglement Effects in Relativistic Reference Frames
1158. generating shock wave using aerodynamic window
1159. probability current versus electric current
1160. photons at same place at the same time
1161. two loop corrections...
1162. quantum virial and confinement
1163. delta potential barrier
1164. Momentum - Energy Question
1165. Good Introductory QM text?
1166. DiVincenzo Criteria
1167. The Photoelectric Effect
1168. symmetries and conserved quantities
1169. interference
1170. Wanna get messy with Quantum Cakes?
1171. Maths of path integrals?
1172. The exact meaning of the 4 components of the Dirac Spinor
1173. About quantum information, Bell states or GHZ state?
1174. The Fine Structure Constant
1175. Non Commutative Quantum Field Theory
1176. Distinguishability
1177. What are generalized probability functions?
1178. Symmetric Potentials
1179. observers and observation
1180. Could someone explain Luders Rule?
1181. Reference to a peer reviewed paper
1182. Intro to quantum physics
1183. Recursion relation for C-G coefficients
1184. About the wavefunction
1185. energy levels in quantum well structures
1186. Decay length of Half Square Well
1187. pauli exclusion principle
1188. Chern Simons Spin density as hidden variable.
1189. Difference between Fermions and Bosons in Feynman diagrams
1190. Bohr model & Atom Stability
1191. Spectroscopy question
1192. raising and lowering operators for spin
1193. Quantum number and wave vector
1194. momentum eigenstate
1195. Visualizing quantum spin
1196. Bayes theorem in quantum mecanics
1197. negative force!!!!
1198. "An irreducible representation of..."
1199. What's going on between Alice and Bob?
1200. Question - fine structure
1201. quantum numbers
1202. Good introductions to quantum field theory and vacuum
1203. Numerical calculation of tunneling probability
1204. Quantum Mechanics and Relativity.
1205. Extra dimensional equation for energy. Curled dimensions, scales, QM
1206. Unitary evolution and analytical continuation
1207. what does this state collapse into after the measurement?
1208. Logical Rational for spooky-action @ at distance
1209. Spherical symmetric potential
1210. De Broglie wavelength of a particle
1211. Know H or CM?
1212. Electronic structure of the atoms
1213. Electron size
1214. Non-local Casimir force?
1215. Superposition or Many-worlds interpretation?
1216. Proper tunneling time
1217. Physical meaning for wavefunction
1218. Advice about assignment on QM
1219. Compton Scattering from bound electrons
1220. Massive boson propagator - problem with step in derivation
1221. Reasonable Relativistic Speeds
1222. Afshar's experiment
1223. Two-slit & n-slits?
1224. neutrinos going through neuclei?
1225. Angular Momentum Expectation Values help for noobie
1226. First order term of S in QED
1227. Quantum Network and Quantum Imaging
1228. Acceptance of Many Minds
1229. Tadpole graph & normal ordering
1230. atoms entangled
1231. how instantaneous?
1232. most useful QM formalism?
1233. How do electrons move?
1234. I need your help teaching physics
1235. Teleportation & EPR
1236. The dimension of the fine structure constant
1237. Parallel Quantum Computers
1238. fermion contraction
1239. Photons and interference
1240. Density matrix off diagonal terms - what do they mean?
1241. Bohmian particle in box
1242. Electromagnetism
1243. program for feynman diagram
1244. Sidney Coleman (1937-2007)
1245. matrix of angular momentum operator
1246. Bizarre theory-Could there be any truth in this?
1247. Compton Effect
1248. Why does Lorentz Force law work?
1249. Quantum Foam
1250. How to observe the future?
1251. From WHERE???
1252. Deadly observables
1253. One Photon from coil and battery
1254. Wax on Wax off
1255. How many believes in Quantum Immortality ?
1256. Result of measuring H_x
1257. Consequences of Dirac Theory of the Positron
1258. What book best accompany Bohm's
1259. time-dep perturbation theory
1260. Testing Hermicity
1261. permutation operator
1262. MWI bugging me
1263. Argument with physics teacher
1264. Time dependent eigenvalues?
1265. System of hydrogen atoms in an electric field
1266. How to work in the momentum representation?
1267. Integrating over all possible fields
1268. Has Zeilinger disproven DeBroglie-Bohm?
1269. "Artificial atoms" used to improve compact discs?
1270. [YPz,YPx]=0
1271. Why integral particle number?
1272. four fermion interaction??
1273. Quantum physics with Green's functions
1274. Non-Commutative Angular Momentum, and Muonium
1275. spin half
1276. R-constants
1277. Nonlocality of a Single Particle: A Scheme Without Objections
1278. Intiutive approach to Green's function for SE
1279. What do photons look like?
1280. Probability Amplitude phases
1281. slit experiments
1282. Entanglement for real?
1283. I understand Quantum Theory
1284. What is Quantum Physics?
1285. Hilbert/Fock space spanned by non-interacting states
1286. spectral line width calculations
1287. Always in an eigenstate?
1288. Consciousness question
1289. Excitation vs. Absorption
1290. Flux vs. fluence
1291. A crank's idea about Uncertainty Principle
1292. two particles in superposition
1293. Need a quick tutorial on the following topics
1294. I feel stupid for askin this but...
1295. Spin degeneracy
1296. The Dirac Equation and the Neutrinos
1297. Virtual Photons as Force Carriers
1298. Double Slit experiment
1299. 3 photon entanglement
1300. Zero-Point Energy?
1301. Is the physical whole a sum of quantum measurements?
1302. Why is angular momentum quantized?
1303. Light through polarizing filters
1304. spin chains
1305. path integrals
1306. Delta Function Well
1307. Operators
1308. Free Particle Understanding
1309. DFT/hartree Fock calculations
1310. A variation of the double-slit experiment--myth or did somone really do it?
1311. Communication using quantum entanglement
1312. Plethra of questions.
1313. COM vs Lab Total energy discrepency
1314. perturbation effect on harmonic osclillator
1315. completeness
1316. QM angular momentum question
1317. completeness relation
1318. Fourier Transform of Hermitian Operators
1319. why
1320. Zeta function regularization
1321. bound states
1322. Question about Entanglement
1323. typo in "Kapusta" or "Ashok Das"? Formula for thermal propagator
1324. Eigenvalues and [p,q]=i
1325. hermitian matrices
1326. Absorption of photons by electrons
1327. light polarization
1328. Electromagnetic casimir effect
1329. Euclidean QFT and thermodynamic analogy
1330. Getting to grips with Feynman
1331. Why does spin 0 have to be a true scalar?
1332. 'Spookytech'?
1333. Operators - Parity
1334. why is the electric dipole moment of an atom zero, but the magnetic moment nonzero?
1335. Pψ=aψ
1336. Photon capture
1337. clarification on wavefunction collapse
1338. Question about the Photoelectric Effect
1339. How two quantum systems interact ?
1340. What is interactive force?
1341. Entanglement and interference in a nutshell
1342. Light diffraction
1343. Can QT estimate the ionization energy of neutral Helium, He I?
1344. Orthonormal basis and operators
1345. Angular Momentum Ladder Operators
1346. Wavefunction collapse: is that really an axiom
1347. Adding Three Spin 1/2s
1348. Local in space
1349. Higgs field questions
1350. Photon, black hole, Wikipedia quote
1351. Questions about MWI clones
1352. Particle in a shrinking box
1353. Fermi and Bose statistics...
1354. detecting a particle in QFT
1355. Bosonic atoms?
1356. deriving baker campbell hausdorff relation
1357. energy from single point rather than expectation integral in Full CI calculation??
1358. Shor's algorithm
1359. significance of the hamiltonian commuting
1360. Usefulness of Heisenberg picture?
1361. pure/mixed state
1362. experimentally proving MWI
1363. Anyone know of a good QF doco?
1364. Spin Interference
1365. On the helicity of the electrons
1366. entanglement and observations
1367. Wave functions of molecules?
1368. Aether Over Einstein?
1369. I won't debate on the "wavefunction collapse" ...
1370. Quantum Video
1371. Problem on Bell States..
1372. operator in non-orthogonal basis
1373. sequential stern-gerlach
1374. Complex simple Lie algebras classification
1375. Symmetry and conserved probability current for wave functions
1376. Book on QM for beginner
1377. operator question
1378. Do MWI and String theory conflict? (sorry--I'm a layman)
1379. Yang-mills
1380. Spin 1/2 Particles
1381. How are the positions of particles described in QFT?
1382. Quantum immortality and engineering your universe?
1383. Many-worlds interpretation: Worlds joining instead of splitting?
1384. A photon as a phonon in ether?
1385. How The Mass Of an Electron Was Worked Out
1386. Book on quantum physics
1387. time in quantum physics
1388. Forces
1389. Are all Atoms the same size?
1390. cylindrical waves
1391. about the radiation of blackbody
1392. Can Atoms make a sound?
1393. Very basic help on notations
1394. shor's algorithm
1395. time independent perturbation theory
1396. Transmission of Light...How???
1397. Commutator with r, p_r and angular momentum..
1398. Continuity of the wave function
1399. Quantum uncertainty and digital data
1400. Noncommuting operators and uncertainty relations
1401. negative energy in griffiths
1402. instantaneous potentials
1403. Pure Electron Diffraction Experiments
1404. interference and photons
1405. Very basic questions about QFT
1406. Binding Energy in U-235 and daughter atoms
1407. entanglement and which-path
1408. understanding Klein-Gordon
1409. field quantization
1410. The use of Eigenvalues/function in QM
1411. Relativistic quantum mechanics and causality
1412. Single-Particle Interference for BIG objects-what does it mean for a lay person?
1413. unique to within a constant factor???
1414. Gordon decomposition an "right" current
1415. coherence of laser
1416. time independent perturbation theory
1417. Entanglement
1418. decoherence time
1419. CNOT gate
1420. Understanding the Probability Current J
1421. shall operator sign change
1422. Application of true randomness
1423. Noob Question
1424. spin matrix
1425. A Conceptual Question
1426. diagonalization
1427. propagation speeds in literature
1428. More about wave packets
1429. spinor
1430. gauge transformations
1431. What is attraction?
1432. photon spin
1433. Velocity of Photon - Feynman
1434. Kinetic orbital momentum
1435. What is the absence of energy?
1436. How is electron formed? Why does it travel?
1437. collapses against conservation laws
1438. cat in a box paradox
1439. Absorption Spectra
1440. Watching a wavefunction gradually collapse
1441. Watching a wavefunction gradually collapse
1442. qft topic question
1443. Quantum Mechanics and Determinism
1444. Interference of two particles - how does it work?
1445. renormalization
1446. Spin - overlapping photons with opposite spin
1447. Chirality in Dirac Equation
1448. DDCS: Explanation
1449. Interaction representation
1450. hamiltonian and energy momentum tensor
1451. Symmetry Groups
1452. Quantum chaos
1453. non-abelian anomalies
1454. Quantum leap FTL ?
1455. relativistic quantum mechanics
1456. Robinett book
1457. Decay Modes of the Higgs
1458. about wave function collapse
1459. Definitive website about QM
1460. Schrödinger equation: macro level
1461. A string nailed at two points
1462. Help!! Quantum Mechanics
1463. Associated currents with discrete symmetries?
1464. Why Hilbert space?
1465. bohmian mechanics
1466. Two state system
1467. lagrangian and hamiltonian formalism
1468. Does Photons bouce off eachother
1469. molecular switch and mobius molecules.
1470. How are the formulas in QM derived?
1471. General Hamiltonian from SE
1472. Teleportion of particles in Vienna in 2000
1473. at the same time...
1474. universal unit of time
1475. Another question on Schrodinger Equation
1476. Physical Meaning of QM Expectation Values and other ?s
1477. about hamilton operators
1478. Wave functions
1479. Linearity of A Hermitian Operator
1480. Proof Dealing With No-cloning Theorem
1481. answers of questions in mathematics of classical and quantum physics
1482. Energy from Casimir effect
1483. Questions on observation
1484. energy required to create electron positon pair
1485. maxwell's equations
1486. Is BM “Bohmian Local” actually Local
1487. group theory question
1488. Measurement question
1489. Stern Gerlach angle?
1490. acceleration quantization ??
1491. feynman's sum-over-histories
1492. spinors
1493. Magnetic & electric fields in QM?
1494. Temporal overlap of light beams
1495. Can't walk through a wall.
1496. Quantum Questions from a Sci Fi writer
1497. Time in QM
1498. Angluar momentum of 0?
1499. Pauli's exclusion principle?
1500. Confinement in QED
1501. parity
1502. A non-linear SE can have Eigenvalues??
1503. BEC Propulsion?
1504. scalar field and spin 1/2 field
1505. spin angular momentum operators
1506. Wave particle duality again(photons)
1507. Wave function
1508. Gauge Transformations and (Generalized) Bogoliubov Transformations.
1509. path integral in momentum representation
1510. What is the difference between entangled and "normal" photons?
1511. Finding Einstein’s Hidden Variable
1512. what do we mena by energy barrer!!
1513. Free-Air Transmission and Quantum Effects?
1514. four momentum
1515. renormalization group and cut-off
1516. Helicity vs. Chirality?
1517. Q concerning Schrödinger’s equation
1518. Unlimited energy???
1519. Rewriting a wave function superposition
1520. Intensity of Hydrogen spectral line
1521. gauge corvariant derivative
1522. symmetric potential
1523. dirac bilinears
1524. Negative energies.
1525. thoughts about ∣Φ>=∣1>*C1+∣2>*C2
1526. Intensity of radiation emitted by a box full of Hydrogene at some T
1527. albenian and nonalbenian
1528. feynman diagrams
1529. (How) is a single photon polarized?
1530. renormalization and divergent integrals.
1531. Spin-statistics theorem
1532. Question about quantum mechanics
1533. wave functional
1534. fourier analysis in qft
1535. Does anyone know a good ref for this?
1536. Origin of photons
1537. Continuity of correspondence?
1538. Measurements problem - QED
1539. travelling on waves
1540. Allowed energies for an SHO
1541. Quantum affects what scale?
1542. meaning of quantized
1543. Magnetic Monopole
1544. Correspondence Principle
1545. schrodinger's equation
1546. Understanding interference and decoherence
1547. Casimir effect - Does it fit? Or NOT?
1548. Confused on Electron Double slit experment
1549. what does canonical mean?
1550. Do photons possess energy?
1551. Probability or Impossibility in QM?
1552. Question on Double Slit experiment
1553. Slow variables in Nonlinear Schrodinger Equation
1554. a paradox about Heisneberg Uncertainty ??
1555. Fourier transform formulation of the dirac delta
1556. Virtual particles
1557. usual QM with 'loops'
1558. SO(4) Group
1559. Negative work function??
1560. Compton scattering: electron absorbs then emits a photon?
1561. I've found a way to "see" electrons! (?)
1562. Klein's Paradox
1563. Novice question about heat, ZPE and HUP
1564. Velocity of electron
1565. On Heisenberg Principle - ParticleWave Hybrid
1566. quantum tic tac toe
1567. photon's charge
1568. Photoelectric effect
1569. Double slit - do it yourself?
1570. photodetection theory
1571. quantum optical application of Pascal Principle
1572. de Broglie wavelength
1573. Modified Mach-Zehnder Interferometer
1574. The Born Von Karman Boundary Conditions
1575. Weak measurements? Modified Double slit
1576. Is backward-in-time causality a requirement in Cramer's transactional interpretation?
1577. How make a confront between energy levels?
1578. Haag's Theorem, Perturbation, Existence and QFT.
1579. Quantum Random Bit Generator
1580. Fourier Integral involving a position operator
1581. Spun Out
1582. Renormalization schemes
1583. The temperature is also quantized?
1584. Path integral
1585. Propagator
1586. The Observer and Locality in the Quantum World
1587. Cramer's Backward Causality Experiment
1588. Bell's Inequality with BEC Superatoms
1589. Does "frequency" make sense in terms of one particle?
1590. Why doesn't QM make particles zig-zag as they travel?
1591. Conditions for entanglement to exist
1592. Filming of an electron
1593. Quantum Teleportation
1594. How big is a photon
1595. energy of first orbital
1596. E=nhf
1597. Cyclic Energy Transformations QM
1598. Propagator equation
1599. Uncertainty
1600. Electromagnetic field vs. photon(s)
1601. entangled photons
1602. periodic potential
1603. photon absorption
1604. what is propagator
1605. paraquantization
1606. Hamiltonian
1607. operators
1608. Definition of a measurement
1609. periodic potential: Bloch's theorem
1610. Does Moon exist if you don't look at it?
1611. Can i exploit johnson noise to violate the second law?
1612. QM from a variational principle.
1613. question on the nature of spacetime
1614. Issue with Copenhagen Interp
1615. can a composite system AB in a state of |0> ???
1616. Question about Quantum theory
1617. Photon pressure
1618. Higgs particle
1619. pi-zero particle
1620. Particle theory of light
1621. Relativistic Correction
1622. Electron spin, why do the pairs have to be opposite?
1623. Quantum Interpritation?
1624. A poll
1625. Time ordered product vs. commutator in path integral
1626. covariant quantum field theories
1627. Path integrals and propagators
1628. How far does the Pauli Exclusion Principle apply?
1629. What is lacking in QM that String theory wishes to fill up?
1630. Does Pauli's principle prevent an electron from having infinte energy?
1631. Quantum field theory vs particle physics
1632. How observation leads to wavefunction collapse?
1633. Copenhagen interpretation
1634. A few quantum mechanics questions
1635. Wave-particle duality
1636. operators in Bra-Ket notaion
1637. Wheeler's delayed choice gedanken experiment
1638. Photon-Ghost coupling?
1639. Rough Description of State Space
1640. Balmer & Rydberg equations
1641. Euler-Lagrange equations in QFT??
1642. Measuring velocity and position of a particle
1643. quantum entanglement
1644. attractive exchange forces?
1645. Canonical variables
1646. Basis ambiguity?
1647. I don't understand the paradox of entanglement...
1648. The Infinite Well
1649. energy in QM
1650. Locality/nonlocality for bound states - a question
1651. Euler-Lagrange equation
1652. operators in QM
1653. HUP and Particle Accelerators
1654. about symmetry operation and a corresponding unitary transformation
1655. SR and QM related by Everett's MWI?
1656. D-Wave and Quantum computing
1657. Stern Gerlach
1658. Quarks?
1659. Where does the energy possessed by a free electron come from
1660. complete basis for quantum oscillator Hilbert space
1661. Transactional Interpretation
1662. Wave/Particle Double Slit Experiment Questions
1663. "Spooky Action At A Distance"
1664. Undergrad Lab Experiment
1665. Dirac Sea = Unceasing Day
1666. Have all the electrons in this universe come from a single electron?
1667. How does spin justify Pauli's principle?
1668. PhotoLuminesence in Quantum Dots
1669. Holstein Model Basis States
1670. Malus law in quantum mechanics
1671. What is Quantum Physics in simple?
1672. How does entanglement affect a photon's ability to interfere?
1673. Can the Pauli principle be visualized?
1674. feynmann diagrams, bhabha scattering
1675. Lerning the Standard Model and some question about QM
1676. Is the study of black holes using entanglement practical?
1677. Do equivalent quantum states imply entanglement?
1678. "Inside the Wavefunction"
1679. Generation of polarization entangled photons
1680. Exchange integral?
1681. Explanation for the double slit?
1682. Demystifying spin?
1683. wave packets that feel harmonic potential
1684. Hamiltonian of Minimum Uncertainty State
1685. negative kinetic energy?
1686. Unclear about the Heisenberg uncertainty principle
1687. Spin functions
1688. perturbation?
1689. Time ordering operator
1690. Klein Gordon Hamiltonian
1691. Clebsch-Gordon
1692. What charges a proton?
1693. How many gluons in a proton?
1694. Dirac delta function
1695. why the reflection and transmission?
1696. Nodes of a wavefunction
1697. Quantum Computing problem [Quantum Teleportation] (Nelson and Chuang)
1698. distinguishing between superposition and hidden information
1699. violation of physical laws?
1700. 2-D Wigner-Eckert Theorem
1701. Quantum vaccum one dimensional?
1702. Commutators and the Parametric Nonrelativistic Particle?
1703. 2 or more particles in a box?
1704. Expectation Value of Momentum in H-Atom
1705. Selection rules and related stuffs
1706. Energy eigenfunctions?
1707. Quantum Dots
1708. spectral line width problemo!
1709. Can anyone show me this?
1710. A few questions about QM and QFT.
1711. tunneling past the speed of light
1712. Method of analysing the SE?
1713. Harmonic oscillator?
1714. Help on classical-quantum boundary poll?
1715. time independent schrodinger equation: delta potential
1716. Photon is different from an eletron
1717. Wavefunction conditions
1718. QM of particles with no common past light cone
1719. Is quantum field theory a genuine quantum theory?
1720. Photon tunneling...
1721. Double Slit Experiment Movie
1722. A Quantum problem..
1723. A general math theory on the quantum harmonic oscillator?
1724. Isn’t Bell’s probability density for hidden variables too restrictive?
1725. Simple question regarding the Bloch Sphere
1726. Common quantum question
1727. Minimum uncertainty state?
1728. Is there a minimum possible wavelength?
1729. neutron decay?
1730. Even another 2-slit experiment setup
1731. Why is glass "QM transparent"?
1732. QM and maths?
1733. The double slit experiment
1734. Question on experiment
1735. correspondence principle
1736. Black Body Radiator Question
1737. Magneto-Optical Trap
1738. "the mass of photon"
1739. EPR and FTL
1740. Intensity of light constant..why rate of emission of electrons changes??
1741. Integral
1742. Cateogory theory in physics
1743. Is the Entropy of the Universe Zero?:(Entropy as Entanglement)
1744. Why the Photon?
1745. Harmonic Oscillator, Ladder Operators, and Dirac notation
1746. Fermi Golden Rule
1747. The prbability density
1748. pauli principle confusion
1749. What exactly is spin?
1750. Another misleading observer example, or not?
1751. Solving S.E. for rigid rotor (asymmetric top)
1752. New interference experiment
1753. godel incompletness related to physics?
1754. F=ma
1755. what is velocity ,momentum.
1756. quantum angle selectivity of polirizers filter
1757. Eigenvalues for particle in finite square well
1758. anticommutation example
1759. uncertainty of when a photon is absorbed
1760. Another doubt regarding wavefunction.
1761. Transition Dipole Moment and Electron Transfer
1762. what does * mean and how is it used
1763. About WKB approximation
1764. Can someone explain the Schrödinger equation?
1765. How can this possible tricky situation be explained?
1766. Why Bohm?
1767. \Phi^3 Quantum Field Theory
1768. A few questions about particles.
1769. How is light experimentally proven to be a particle?
1770. Measuring instant changes in particles
1771. What are entangled particles?
1772. Imaginary Action
1773. Fundimental frequency of subatomic particles.
1774. Dirac's field
1775. Wave function
1776. Original QM sources
1777. What will happen in the following scenario?
1778. Waves...........
1779. Relative Time and Mass Equation...
1780. Minimum energy for a spin flip?</