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.
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Graduate Gaussian wave packet in position space
- KFC
- · Replies 8 ·
Graduate What are the units for ΔxΔp in the uncertainty principle?
- KFC
- · Replies 5 ·
Graduate Comments - Measuring Quantum Entanglement?
- jfizzix
- · Replies 23 ·
Graduate Probability normalization with finite limits and operator expectations
- paradoxymoron
- · Replies 3 ·
Graduate The operator X for the position in QFT
- Andre' Quanta
- · Replies 27 ·
Graduate How to Calculate Casimir Force with Dielectric Vacuum Between Metal Plates?
- Marian246
- · Replies 1 ·
Graduate Does measuring one photon preserve entanglement with the other?
- Ryan Reed
- · Replies 1 ·
Graduate 2D Projective Complex Space, Spin
- msumm21
- · Replies 4 ·
Graduate What is the smallest portion of energy?
- jirakst
- · Replies 6 ·
Graduate Is Frequency Quantized in Quantum Mechanics?
- =SJ=
- · Replies 1 ·
Graduate Does a Buckyball spin like an electron or like a baseball?
- jimgraber
- · Replies 12 ·
Graduate Is Probability conserved in RQM?
- LarryS
- · Replies 13 ·
Graduate Normalization of free scalar field states
- soviet1100
- · Replies 6 ·
Graduate Effect of acceleration on entanglement
- Dragonfall
- · Replies 18 ·
Undergrad Why do we use i to represent phasors and/or vectors?
- friendbobbiny
- · Replies 1 ·
Graduate Experimental loophole-free violation of a Bell inequality
- DrChinese
- · Replies 2 ·
Graduate Momentum eigenfunctions proof and Fourier Transform question
- Joker93
- · Replies 14 ·
Graduate Delayed choice as a quantum logic circuit
- Strilanc
- · Replies 5 ·
Graduate Knowing which-path information by calculating distance time?
- Vloodz
- · Replies 10 ·
Graduate No-cloning and stimulated emission
- greypilgrim
- · Replies 32 ·
Graduate In Bell are pairs independent?
- jk22
- · Replies 10 ·
Graduate Sources to learn about Berry phases and Adiabatic Theorem
- Joker93
- · Replies 4 ·
Graduate Collisional excitation: selection rules for rotations?
- uselesslemma
- · Replies 1 ·
Graduate Quantum Property: Can a Particle Have It Both Ways?
- Einstein's Cat
- · Replies 1 ·
High School Can a particle exist without time
- DaMeekie
- · Replies 10 ·
Graduate Schrodinger equation numerical solution
- aaaa202
- · Replies 4 ·
Graduate Divergence of integral over vacuum energies (Free field)
- soviet1100
- · Replies 2 ·
Graduate Why does the intensity of Bremsstrahlung radiation increase with lower energy?
- Shailesh Pincha
- · Replies 1 ·
Graduate Representations of Poincare group
- Andre' Quanta
- · Replies 9 ·
Graduate Conservative physical quantities
- KostasV
- · Replies 4 ·
Graduate Separability of Hilbert Spaces
- Andre' Quanta
- · Replies 3 ·
Graduate Fields as operator valued distributions
- naima
- · Replies 11 ·
Graduate Does empty space have a mass effect?
- PGTART
- · Replies 1 ·
Graduate What is the role of spherical harmonics in quantum mechanics?
- KostasV
- · Replies 2 ·
High School Speed of interaction between entangled particles
- TotalNovice
- · Replies 15 ·
Graduate Does time exist at Quantum level?
- Gaz1982
- · Replies 38 ·
Graduate Does decoherence constitute measurement and can superposition be restored?
- rasp
- · Replies 3 ·
Graduate Does exchange of identical particles lead to new state?
- zhanhai
- · Replies 7 ·
Graduate Why is QFT insensitive to absolute energies?
- "Don't panic!"
- · Replies 9 ·
Undergrad Double slit particle distribution with convex lens?
- Nav
- · Replies 1 ·
Graduate Vacuum fluctions and the Casimir Effect
- HeavyWater
- · Replies 3 ·
Graduate State Vectors as elements of Hilbert Space
- devd
- · Replies 8 ·
Undergrad Entanglement Swapping and measurement vs. observation
- quantumfunction
- · Replies 24 ·
Graduate Could we calculate the number of Planck flops in a human lifetime?
- Jimster41
- · Replies 6 ·
Graduate Interacting Quantum Field Theory: Ground State
- Gedankenspiel
- · Replies 4 ·
Graduate Total spin of triplet and singlet states
- K448
- · Replies 4 ·
Graduate What does the abrupt stop in black hole complexity mean?
- Justice Hunter
- · Replies 2 ·
Graduate Confusion about Rayleigh-Jeans law
- En Joy
- · Replies 7 ·
Graduate Why do changing magnetic fields produce electric fields?
- Jeff Rosenbury
- · Replies 6 ·
Graduate What is the condition for a particle to go into a square potential well?
- learner@123
- · Replies 12 ·
Graduate Bell inequality violated with classical light in experiment
- DirkMan
- · Replies 4 ·
Graduate Who would be interested in an EPR thought experiment?
- votingmachine
- · Replies 18 ·
Graduate How Can Gravitons Escape A Black Hole?
- Ryan Reed
- · Replies 14 ·
Graduate Thought double-slit experiment
- En Joy
- · Replies 5 ·
Graduate No interference pattern in double slit when there is a lens?
- Nav
- · Replies 1 ·
Graduate Question on the photoelectric effect?
- mklaben15
- · Replies 1 ·
Graduate Is Quantum Mechanics an artifact of our ignorance?
- Noctisdark
- · Replies 23 ·
Graduate Can an observer define a particle's position or does it remain probabilistic?
- Einstein's Cat
- · Replies 3 ·
Graduate Flame colors - where's the chlorine?
- wizzart
- · Replies 2 ·
New paper on quantum entanglement in condensed matter systems
- Demystifier
- · Replies 16 ·
Graduate Do observables for polarizers at different angles commute?
- greypilgrim
- · Replies 4 ·
Graduate Uncertainty principle if position is restricted
- greypilgrim
- · Replies 4 ·
Insights You Will Not Tunnel Through a Wall - Comments
- ZapperZ
- · Replies 63 ·
Undergrad Why electrons never make contact with the nucleus?
- Med242
- · Replies 11 ·
Graduate Does SU(2) rotation automatically imply spinor rotation?
- HowardTheDuck
- · Replies 2 ·
Graduate Quantum locking -- Good sources of info?
- J35T3R
- · Replies 1 ·
Graduate Does the CMB wavefunction spread over 13 billion years?
- Gerinski
- · Replies 2 ·
Graduate Schrodinger equation - stationary states
- miriteva
- · Replies 6 ·
Graduate Why particle in a box wavefunction isn't an eigenfunction of momentum
- hgnk708113
- · Replies 5 ·
Graduate A "false" superimposed qubit vs a "real one"
- Julian Blair
- · Replies 4 ·
Graduate Observed interference in afshar's double slit experiment?
- Nav
- · Replies 1 ·
Graduate Is There One Electromagnetic Field in the Universe or Multiple Fields?
- guywithdoubts
- · Replies 19 ·
Graduate Noetherian currents and the Surface term
- cpsinkule
- · Replies 2 ·
Graduate Particle waves through a potential barrier
- DivGradCurl
- · Replies 4 ·
Graduate Physical difference between singlet and triplet states
- Wminus
- · Replies 2 ·
Graduate What do you understand about quantum entanglement?
- Armando Valle
- · Replies 3 ·
Graduate In what sense do within-H-atom electrons "move" at ~1/137c?
- Diploria
- · Replies 19 ·
Graduate Is it possible to travel to parallel universes?
- nivak
- · Replies 6 ·
Graduate Finding coefficients of superposition of states
- bznm
- · Replies 8 ·
Graduate Do other quantum states disappear when you measure one in the many-worlds interpretation?
- qudrat ullah
- · Replies 14 ·
High School How did the electron first start spinning around an atom?
- faiziqb12
- · Replies 28 ·
Graduate Symmetric and Antisymmetric Depiction
- Davephaelon
- · Replies 2 ·
Graduate Why does measuring Sz make Sx uncertain for a spin 1/2 particle?
- Molar
- · Replies 1 ·
Graduate Representation of spin matrices
- bznm
- · Replies 2 ·
Graduate Can Quantum Mechanics Explain the Fate of the Bucket in a Thought Experiment?
- armchairguy
- · Replies 16 ·
Graduate Implications of the no-clone theorem
- carllacan
- · Replies 2 ·
Graduate Calculation of the running coupling
- Trifis
- · Replies 4 ·
Graduate Commutation between operators of different Hilbert spaces
- Wminus
- · Replies 2 ·
Undergrad What are the unusual properties of monatomic gold?
- Mr. Mackey
- · Replies 1 ·
Graduate Is the speed of light in a vacuum affected by an electric field?
- HeavyWater
- · Replies 11 ·
Undergrad Why do some photons reflect off glass if they can't excite electrons?
- Christian Grey
- · Replies 7 ·
Graduate Atomic dipole moment for a superposition state
- DivGradCurl
- · Replies 1 ·
Graduate What is the problem with point particles?
- nnerik
- · Replies 11 ·
Graduate Why Are There Blank Spaces in Quantum Mechanics Orbitals?
- Danilo Boskovic
- · Replies 3 ·
Graduate Learning path for quantum mechanics mathematics from scratch
- Agreegate
- · Replies 2 ·
Graduate Heisenberg uncertainty question
- lightoflife
- · Replies 3 ·
Graduate Law of baryon conservation questions
- lightoflife
- · Replies 1 ·
Graduate Faster-than-light signaling with entangled electrons to Mars
- theargosy
- · Replies 13 ·
Graduate Hamiltonian matrix representation for a particle on a circle
- JonnyMaddox
- · Replies 1 ·
Graduate Dirac Relativistic Wave Equation
- John Rampton
- · Replies 5 ·