Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.
Threads
Graduate The Quasi Classical Approximation(Landau Lifshitz)
- aim1732
- · Replies 1 ·
Graduate Hankel Functions: Solutions to Cylindrical Wave Equation
- aim1732
- · Replies 7 ·
Graduate Relation between mass and wave function
- nil1996
- · Replies 5 ·
Graduate A single atom in a cold, closed, vacuum system.
- nukapprentice
- · Replies 11 ·
Graduate How Do We Correctly Calculate the Distribution of Bosons Among Energy Levels?
- ShayanJ
- · Replies 1 ·
Graduate Double Harmonic Approximation IR intensties
- DinosaurChemi
- · Replies 1 ·
Graduate Trying to wrap my brain around entanglement-superposition
- drschools
- · Replies 3 ·
Graduate Why does the phase-space contour integral equal action?
- Glidos
- · Replies 2 ·
Graduate Field and conjugate independent?
- geoduck
- · Replies 4 ·
Graduate Does gravity break down in the big bang?
- daanaerts
- · Replies 6 ·
Graduate Acceleration operator and the electron in a hydrogen atom
- QuasiParticle
- · Replies 4 ·
Graduate Wavepacket incident on a potential step
- id00022
- · Replies 7 ·
Graduate Existence of Pure Quantum States
- msumm21
- · Replies 13 ·
Graduate Representation of linear operator using series ?
- V0ODO0CH1LD
- · Replies 2 ·
Graduate Number of possible wavefunctions only countably infinite?
- nomadreid
- · Replies 32 ·
Graduate Is dBB reproducing quantum results ?
- jk22
- · Replies 17 ·
Graduate Pulling out partial derivatives?
- Cogswell
- · Replies 3 ·
Graduate Uncertainty Relation between Lx and Ly
- *FaerieLight*
- · Replies 14 ·
Graduate Can Singlets be Prepared with a Preferred Direction?
- anorlunda
- · Replies 2 ·
Graduate Quantum teleportation and the density matrix
- VantagePoint72
- · Replies 1 ·
Undergrad Photocurrent and frequency of incident light
- ViolentCorpse
- · Replies 2 ·
Graduate Is Squaring the Momentum Operator the Same as Applying it Twice?
- Sylvia Else
- · Replies 3 ·
Graduate Transforming Representations of SO(3) to Act on Vectors?
- silverwhale
- · Replies 30 ·
Graduate Are raising and lowering operators factors of the Hamiltonian?
- Roodles01
- · Replies 1 ·
Graduate Matrix exponentiation using gsl library (Computational Quantum Mechanics)
- sijokjoseph
- · Replies 5 ·
Graduate Expectation value at ground state
- Roodles01
- · Replies 1 ·
Graduate Why doesn't one-photon-irreducible function have any pole at q^2=0?
- kof9595995
- · Replies 2 ·
Graduate What is the minimum observer energy?
- Jeff Rosenbury
- · Replies 3 ·
Undergrad Does a beam of electrons in vacuum at near light speed generate a magnetic field?
- rrosenthal
- · Replies 3 ·
Graduate Stability of atoms in QM / QED
- tom.stoer
- · Replies 6 ·
Graduate Time independant perturbation problem
- omoplata
- · Replies 3 ·
Graduate Molecular material ground state
- hokhani
- · Replies 5 ·
Graduate Parametrization of uniformly distributed n dimensional states
- Arubaito
- · Replies 14 ·
Graduate Are Bose Eistein Condensates Classical Objects
- bhobba
- · Replies 30 ·
Graduate What Misconceptions Exist in What The Bleep Do We Know?
- WalkTheWorld
- · Replies 2 ·
Graduate Collection of foundational papers?
- jjustinn
- · Replies 5 ·
Undergrad The strength of electromagnetism in an atom?
- 42Physics
- · Replies 3 ·
Graduate Time independant perturbation - Difficulty understanding derivation
- omoplata
- · Replies 4 ·
Graduate Why does gravity become incompatible with quantum mechanics at small scales?
- Cody Richeson
- · Replies 7 ·
Graduate Probability of finding electron.
- nil1996
- · Replies 1 ·
Graduate Spin singlets and the Bell states
- VantagePoint72
- · Replies 3 ·
Graduate Finite Hilbert Space v.s Infinite Hilbert Space in Perturbation Theory
- ck00
- · Replies 7 ·
Graduate Initial wave function for an electron in a magnetic field
- Syrius
- · Replies 3 ·
Graduate Why do virtual particles separate and recombine?
- friend
- · Replies 4 ·
Graduate Does photon exist without velocity c ?
- cooper607
- · Replies 1 ·
Graduate HUP and good quantum numbers that commute
- Salman2
- · Replies 2 ·
Undergrad Do electrons need specific energies to excite electrons
- GeneralOJB
- · Replies 4 ·
Graduate How can the expression for orthonormal states be simplified?
- omoplata
- · Replies 2 ·
Graduate Accurate equations vs. accurate models in QM
- jon4444
- · Replies 13 ·
Graduate Dr. Plato A Lucien Hardy called and
- Charles Wilson
- · Replies 3 ·
Graduate How can a ground state of free particles have entanglement?
- nonequilibrium
- · Replies 3 ·
Graduate Tattoo featuring quantum physics
- BslBryan
- · Replies 27 ·
Graduate Does metronome synchronization have anything/nothing to do with QM/QE?
- San K
- · Replies 1 ·
Graduate What is the correlation between photon events in space and time?
- Scipio
- · Replies 4 ·
Graduate How close can we photograph individual atoms with light?
- Double-Slit
- · Replies 16 ·
Graduate How do we know that wave f. is the eigenfunction of an operator H?
- 71GA
- · Replies 8 ·
Graduate Is a static EM field made of photons? Do they move at c?
- JohnRood
- · Replies 23 ·
High School Why are Newton's rings circular in shape?
- Mannu136
- · Replies 1 ·
Graduate Mass of a permanent magnet levitating a superconductor?
- keelejak
- · Replies 1 ·
Graduate Is the wave function, an unreal tool, to partially model a real interaction?
- San K
- · Replies 4 ·
Graduate Peskin Schroeder page 30 eq 2.54
- silverwhale
- · Replies 17 ·
Graduate Problem understanding Wigner's classification
- jinawee
- · Replies 14 ·
Graduate Other ways to create an interference pattern?
- SonOfBruze
- · Replies 11 ·
Graduate Total momentum operator in peskin/schroeder
- copernicus1
- · Replies 1 ·
Graduate Difficulties in understanding Brownian motion.?
- leppad
- · Replies 5 ·
Graduate An eigenstates, eigenvectors and eigenvalues question
- pigletbear
- · Replies 3 ·
Graduate Particle in magnetic field, classical and quantum view
- Nemanja989
- · Replies 5 ·
Graduate PBR Theorem: Abandon Quest for Ontic Models of QM?
- jk22
- · Replies 9 ·
Graduate Path Integrals Harmonic Oscillator
- Wislan
- · Replies 1 ·
Graduate What is the energy-time uncertainty relationship in quantum mechanics?
- g.lemaitre
- · Replies 1 ·
Graduate Feynman rules from Yang-Mills lagrangian
- center o bass
- · Replies 7 ·
Graduate Proper form of schrodinger's equation?
- unchained1978
- · Replies 3 ·
Graduate The use of different bases in QFT
- unchained1978
- · Replies 1 ·
Graduate Spin-Orbit Coupling: A Bohr-Orbital Model?
- Fightfish
- · Replies 2 ·
Graduate Equivalence of differential operator terms in action
- Mithra
- · Replies 2 ·
Graduate Sakurai page 196: Orbital angular momentum as rotation generator
- omoplata
- · Replies 2 ·
Graduate Bra-ket notation and qubit issue.
- Relative0
- · Replies 3 ·
Graduate Does quantization mean there are only so many colors?
- Stonius
- · Replies 8 ·
Graduate Why does light partially reflect off a single glass surface in QED?
- jon4444
- · Replies 1 ·
Graduate Electron LOSING energy to the quantum vacuum?
- Pseudo Epsilon
- · Replies 15 ·
Graduate Gauge transformation of Yang-Mills field strength
- center o bass
- · Replies 3 ·
Graduate From statistical to ontological: uncertainty principle
- nomadreid
- · Replies 11 ·
Graduate Why is the electron bound to the hydrogen atom in quantum mechanics?
- LagrangeEuler
- · Replies 3 ·
Graduate Argument for quantum indeterminism
- alpha358
- · Replies 8 ·
Graduate Why only the negative energy particle falls into black holes in Hawking radiation
- dsmikk
- · Replies 13 ·
Graduate Is the wigner D function a representation of SO(3)?
- Yoran91
- · Replies 1 ·
Graduate Proof for commutator $[\hat{H},\hat{a}] = - \hbar \omega \hat{a}
- 71GA
- · Replies 8 ·
Graduate Does time-dependent linear polarization angle equal circular polarization?
- wotanub
- · Replies 1 ·
Graduate Where did they come from and when?
- Pseudo Epsilon
- · Replies 3 ·
Graduate Why do quantum mechanics postulates seem ad-hoc compared to special relativity?
- HomogenousCow
- · Replies 70 ·
Undergrad Determining the Weight of a simple string
- Sekonda
- · Replies 1 ·
Graduate Quantum internet running at Los Alamos National Labs
- Greg Bernhardt
- · Replies 2 ·
Graduate How to derive or verify Hartree product?
- gofightwin
- · Replies 1 ·
Graduate Sakurai page 181: Time evolution of ensembles
- omoplata
- · Replies 2 ·
Graduate Electrons viewed in real time for the first time ever
- zincshow
- · Replies 1 ·
Graduate Harmonic solutions as Riemannian oscillators ?
- glengarry
- · Replies 3 ·
Graduate What is the maximum energy density of EM radiation and its effects?
- easyrider
- · Replies 3 ·
Graduate Fock space and the Brillouin condition
- beans73
- · Replies 1 ·
Graduate For a electron orbiting around the nucleus, why must it be in phase?
- Outrageous
- · Replies 7 ·
Graduate Can a Photon be thought of as a bit?
- hankaaron
- · Replies 7 ·