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 Uncertainty principle and single slit experiment
- Gavroy
- · Replies 5 ·
Graduate Questions about Rigged Hilbert Space
- lugita15
- · Replies 27 ·
Graduate Energy is borrowed from the vacuum /Virtual Particles
- Polyrhythmic
- · Replies 4 ·
Graduate Length contraction on quantum scale?
- jbrussell93
- · Replies 1 ·
Graduate Hypothetical Question of Virtual Particles and Magnets
- Fischer777
- · Replies 2 ·
Graduate Appearing out of nothing with defined characteristics?
- KyleStreet
- · Replies 4 ·
Graduate Does the Einstein -Hilbert Lagrangian has a potential term?
- Karlisbad
- · Replies 4 ·
Graduate What does spurion mean and how does it break symmetry?
- princeton118
- · Replies 5 ·
Graduate Negative off-diagonal elements in density matrix?
- zje
- · Replies 2 ·
Graduate Angular momentum operators for bosons
- cygnet1
- · Replies 2 ·
Graduate Are nonlocal correlations and nonlocal causation fundamentally different?
- Demystifier
- · Replies 76 ·
Graduate What distinguishes observation from measurement in quantum mechanics?
- nouveau_riche
- · Replies 12 ·
Graduate What if I'm the Schrodinger's Cat?
- fbs7
- · Replies 4 ·
Graduate Normalization of vacuum state.
- kof9595995
- · Replies 10 ·
Graduate Proof of orthonormality of the hamiltonian when not real
- NicolaNorth
- · Replies 3 ·
Graduate Understanding Photon Slowdown and Acceleration in Material-Filled Space
- Delta2
- · Replies 2 ·
Graduate Kobayashi Maskawa Matrix Error ?
- Anne-Sylvie
- · Replies 3 ·
Graduate Does Schrödinger's cat collapse its own wave function?
- jbrussell93
- · Replies 5 ·
Graduate Is the Quantum Casino's Use of Euler's Formula Misleading?
- mraptor
- · Replies 5 ·
Graduate What is Seen in Atom Photographs?
- small_bang
- · Replies 9 ·
Graduate Why doesn't the Stern Gerlach field exert torque on the magnetic moment?
- stevenb
- · Replies 7 ·
Undergrad Quantum Computers: Why They're Faster
- egmont
- · Replies 2 ·
Graduate Schroedinger equation with angular momentum operators
- damien88
- · Replies 3 ·
Graduate Plank's constant, phase integral and quantization of action
- phonon44145
- · Replies 3 ·
Graduate Single slit single particle interference
- San K
- · Replies 8 ·
Graduate Layman's questions regarding Measurement Problem
- lauchlan
- · Replies 48 ·
Graduate Deriving Equations for Pure State Quantum System
- StevieTNZ
- · Replies 7 ·
Graduate About expansion of wave functions
- hokhani
- · Replies 1 ·
Graduate Dirac delta wave function impossible?
- nonequilibrium
- · Replies 3 ·
Graduate In comparing different renormalization procedures why do we care about symmetry?
- alemsalem
- · Replies 1 ·
Graduate Currents and the quantum effective action
- muppet
- · Replies 2 ·
Graduate Bell's Theorem Correlations Velocity
- Rodsw
- · Replies 40 ·
Graduate Does Quantum Entanglement Occur During Electron and Positron Collisions?
- idea2000
- · Replies 11 ·
Graduate BRST Symmetry and unphysical polarizations
- lornstone
- · Replies 2 ·
Graduate How Should We Define Spin Angular Momentum in Relativistic Quantum Mechanics?
- kof9595995
- · Replies 5 ·
Undergrad Why doesn't absorbed light reappear when electrons return to ground state?
- webdesignmad
- · Replies 16 ·
Graduate Is action quantized in quantum mechanics?
- phonon44145
- · Replies 16 ·
Graduate Superposition experiment question?
- rollcast
- · Replies 4 ·
Graduate Normalization Conditions of Wave functions
- fscman
- · Replies 4 ·
Graduate Superluminal Light Propagation in Optical Fibres?
- Simon Bridge
- · Replies 11 ·
Graduate Why ghost fields(Faddeev-Popov ghosts) must be ''ghost''?
- ndung200790
- · Replies 2 ·
Graduate Is My Calculation of the Photon State in a Mach-Zehnder Interferometer Correct?
- sirchick
- · Replies 9 ·
Graduate What is adjoint representation in Lie group?
- ndung200790
- · Replies 5 ·
Graduate Quantum mechanical derivation of ohm's law?
- johnathon
- · Replies 4 ·
Graduate Angular Momentum the Full Operator Approach
- keniwas
- · Replies 3 ·
Graduate Albert's narrative argument against Everett-type theories
- bohm2
- · Replies 7 ·
Graduate Angular part of the wavefunction
- Chemist20
- · Replies 21 ·
Graduate Can A Single Photon Be Split Into 45 and 135 Degree Polarization?
- StevieTNZ
- · Replies 6 ·
Graduate Chern-Simons and massive A^{\mu}
- IRobot
- · Replies 2 ·
Graduate What is the interpretation of the Dirac equation and its current operator?
- MelvinSmith
- · Replies 6 ·
Graduate Bra-ket notation Schrodinger Equation
- tomothy
- · Replies 1 ·
Graduate Arbikosov vortex and Heisenberg
- Irid
- · Replies 1 ·
Graduate Feynmann's electron double slit experiment
- Lostinthought
- · Replies 1 ·
Undergrad Does a molecule really take on the shape like the VSPER model?
- rdr-s
- · Replies 1 ·
Graduate Lay Hypotheisis on the Universe (Do you think this is plausible?)
- Vanon
- · Replies 6 ·
Graduate SU(2)L, SU(2)R, other symmetric groups and SSB
- Anne-Sylvie
- · Replies 2 ·
Graduate Is Time an Entropic Result of Space?
- BPArnold
- · Replies 10 ·
Undergrad Why do photon pathways cancel out instead of taking one path?
- sirchick
- · Replies 5 ·
Graduate Why do wave packets expand over time?
- Black Integra
- · Replies 2 ·
Undergrad Beginner-friendly explanations of nonlocality in Bell's Theorem
- asb84
- · Replies 4 ·
Graduate What exactly is intrinsic angular momentum (spin)?
- gnardog777
- · Replies 11 ·
Undergrad Why do electrons absorb light and jump to higher energy levels?
- Strafespar
- · Replies 24 ·
Graduate Does non-locality threaten spacetime if the wave function is physical?
- stglyde
- · Replies 60 ·
Undergrad Wysips transparent solar cell.
- Rush2112
- · Replies 5 ·
Graduate Superselection Rule Results from Schrodinger Equation
- StevieTNZ
- · Replies 6 ·
Graduate What happens to an electron when a photon is reflected?
- kjamha
- · Replies 2 ·
Graduate Is superposition dependant on the measurement of sound as well as sight?
- BrandiGS
- · Replies 10 ·
Graduate Can we probe electrons with neutrinos to avoid the uncertainty principle?
- mraptor
- · Replies 2 ·
Graduate Why is Casimir operator to be an invariant of coresponding Lie Algebra?
- ndung200790
- · Replies 2 ·
Graduate How you come up with the wave func. in the first place?
- mraptor
- · Replies 16 ·
Graduate Superposition in quantum computing
- noman3k3
- · Replies 1 ·
Graduate Why explain with both vectors and functions
- mraptor
- · Replies 3 ·
Graduate How long does a wavefunction stay in a collapsed state?
- jewbinson
- · Replies 5 ·
Graduate Entangled photon polarization correlation
- gespex
- · Replies 6 ·
Graduate Path Integral Basics (Why dimension increases in the integrals?)
- Elwin.Martin
- · Replies 1 ·
Graduate What is the density of states?
- alemsalem
- · Replies 1 ·
Undergrad Can light excite an electron from ground state to a higher state?
- kjamha
- · Replies 7 ·
Graduate Peskin Equation (7.51): Analytic Continuation and Validity
- kof9595995
- · Replies 2 ·
Graduate Energy-momentum tensor for the Dirac spinor
- teddd
- · Replies 3 ·
Graduate Pion decay and neutrino oscillation in OPERA
- thenewmans
- · Replies 2 ·
Graduate Klein Gordon equation and particles with spin
- newphy
- · Replies 21 ·
Graduate How many ''charges'' are there in SU(2) and SU(3) symmetry?
- ndung200790
- · Replies 8 ·
Graduate The state space in quantum field theory
- nicf
- · Replies 17 ·
Graduate Cancellation of infrared divergence
- kof9595995
- · Replies 8 ·
Graduate What is the AC Stark effect?
- Nusc
- · Replies 1 ·
Graduate Classical Stat Mech with Uncertain Initial Conditions vs. Quantum
- maverick_starstrider
- · Replies 1 ·
Graduate Does a unitary quantum cloner create macro superposition and CHSH violation?
- StevieTNZ
- · Replies 1 ·
Graduate The QED experiments Feynman describes in his Auckland lectures on Vega website
- roberto85
- · Replies 1 ·
Graduate How to find the Majorana matrices?
- ag_swe
- · Replies 2 ·
Graduate Even Wave Function in 1D Symmetric Potentials: Can We?
- hokhani
- · Replies 1 ·
Graduate Completeness of eigenvectors in a complete, commuting set
- Lakshya
- · Replies 10 ·
Graduate How does the uncertainty principle work if measurement disturbs momentum?
- annie122
- · Replies 2 ·
Graduate Decoherence and the randomness of collapse
- bilkusg
- · Replies 40 ·
Graduate Quantum Zeno Effect and quantum decay
- Talisman
- · Replies 3 ·
Graduate Given a potential, qualitatively deducing the energy levels?
- nonequilibrium
- · Replies 3 ·
Graduate How to Calculate Clebsh-Gordan Coefficients in Fortran?
- fariba.ahmadi
- · Replies 1 ·
Graduate Spatial representation of field commutator
- blue2script
- · Replies 12 ·
Graduate Can one learn Q.Physics self taught?
- sirchick
- · Replies 1 ·
Graduate Physical meaning of zero eigenvalue
- dudy
- · Replies 4 ·
Graduate Why symplectic symmetry has N(N+1)/2 generators?
- ndung200790
- · Replies 1 ·