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 Proof of "Entropy of preparation" in Von Neumann entropy
- nochemala
- · Replies 1 ·
Graduate Interaction picture equation from Heisenberg equation
- copernicus1
- · Replies 4 ·
Graduate Interested in learning quantum theory
- Jaco Viri
- · Replies 6 ·
Graduate Can entangled particles communicate through time?
- Jim White
- · Replies 2 ·
Graduate How does Bell's inequality work?
- edpell
- · Replies 68 ·
Graduate Density functional theory and partial charge transfer
- arrektor
- · Replies 1 ·
Graduate Entanglement, why are the spins decided on observation?
- Superposed_Cat
- · Replies 13 ·
Graduate Are observables like position emergent properties?
- Peglegpenguin
- · Replies 25 ·
Graduate Understanding virtual particles
- brianhurren
- · Replies 1 ·
Graduate Momentum conservation, the double slit and Heisenberg
- Amaterasu21
- · Replies 6 ·
Graduate Notation on energy level for atoms
- KFC
- · Replies 1 ·
Graduate Is the concept of wave-particle duality outdated in modern quantum theory?
- sunrah
- · Replies 2 ·
Graduate How are units of measure defined in Quantum Mechanics?
- Stephen Tashi
- · Replies 1 ·
Graduate Massless complex field+assumption(s)=massive field. Doable?
- Spinnor
- · Replies 1 ·
Graduate Wave-particle duality and my non-physicist friend
- Guineafowl
- · Replies 7 ·
Graduate Phenomena near the band edge of photonic crystals
- vtahmoorian
- · Replies 2 ·
Graduate Two-Level System Consideration: Electron Indistinguishability
- aaaa202
- · Replies 2 ·
Graduate How to understand the physics meanings for system x--> ix?
- dongsh2
- · Replies 4 ·
Graduate How Do Quantum Probability Waves Differ from Classical Waves?
- Feeble Wonk
- · Replies 7 ·
Graduate How to Determine Group from Commutation Relations?
- geoduck
- · Replies 2 ·
Graduate Quantization of EM in UV & vacuum
- Edward Wij
- · Replies 1 ·
Undergrad Ionization energy calculations
- fsci
- · Replies 3 ·
Graduate Can entangled particles detect black hole properties?
- GreenLRan
- · Replies 2 ·
Graduate From classical statistical physics to quantum physics
- Mishra
- · Replies 4 ·
Graduate Keeping the spin constant during an experiment?
- nomadreid
- · Replies 6 ·
Graduate How do wave packets relate to the uncertainty principle and de Broglie momentum?
- CentralSand
- · Replies 6 ·
Graduate Single photon, timing jitter, reduced indistinguishability?
- zxontt
- · Replies 2 ·
Graduate Is wave-particle duality a myth?
- gerbilmore
- · Replies 8 ·
Graduate How Can Everyday Ion Behavior Illustrate CP Violation?
- vlemon265
- · Replies 4 ·
Graduate Spectral analysis and displacement law
- Ruven
- · Replies 2 ·
Graduate Photon rest mass = 0 wasn't proven experimentally?
- Nick666
- · Replies 15 ·
Graduate Wick's Theorem for free fields only
- epsilon-
- · Replies 5 ·
Graduate How does 1+2+3+4+... = -1/12 appear in the Casimir effect calculation?
- mario0815
- · Replies 2 ·
Graduate Deriving the kinetic energy operator from momentum eigenvalues
- plazprestige
- · Replies 6 ·
Graduate Why is the wave function zero at certain points in the infinite square well?
- space-time
- · Replies 2 ·
Graduate Momentum doesn't exist prior to measurement?
- Larry Pendarvis
- · Replies 10 ·
Graduate Does a single photon wavefront hit both slits simultaneously?
- LitleBang
- · Replies 8 ·
Graduate Local hidden variable theories
- TrickyDicky
- · Replies 12 ·
Graduate Visually representing entangled qubits (i.e., Bell state)
- Elroy
- · Replies 2 ·
Graduate Follow-on to: Is the time-derivative Hermitian?
- vanhees71
- · Replies 15 ·
Graduate Proof of the preservation of normalizability of the wavefunction
- Ahmad Kishki
- · Replies 2 ·
Graduate Is the future of quantum mechanics retrocausal?
- Quantumental
- · Replies 17 ·
Undergrad Why does quantum physics require abstract vector space if I know basic vectors?
- blue_leaf77
- · Replies 8 ·
Graduate Light path to mirror vs block edge in QED path integral
- theorem4.5.9
- · Replies 6 ·
Graduate Can Quantum Tunneling Explain the Energy Released by the Sun?
- Jimmy87
- · Replies 4 ·
Graduate When Quantum Mechanics is thrashed by non-physicists #1
- dextercioby
- · Replies 197 ·
Graduate What happens to the Hamiltonian of the wave function after measurement?
- quantumfunction
- · Replies 3 ·
Graduate Why is the positronium spectrum hard to find?
- Dadface
- · Replies 2 ·
Graduate Bell's theorem assumes determinism that quantum mechanics lacks
- Nick666
- · Replies 12 ·
Graduate Does Quantum Mechanics Necessitate Consciousness?
- Rnnat
- · Replies 23 ·
Undergrad The Physics of Consciousness by Dr. Evan Harris Walker
- Rnnat
- · Replies 2 ·
Graduate Good books on the group theory of quantum mechanics
- aabottom
- · Replies 4 ·
Graduate Integral to determine position probability.
- space-time
- · Replies 3 ·
Graduate Understanding 6-31G in Molecules: N2
- hiltac
- · Replies 3 ·
Undergrad Linear Algebra in Quantum Mechanics
- majormuss
- · Replies 2 ·
Graduate Compton scattering; conservation of momentum violated?
- Fosheimdet
- · Replies 6 ·
Graduate Transverse and longitudinal electric Green function
- Jeffrey Yang
- · Replies 11 ·
Graduate What does it mean that spin states are represented in a two dimensional vector space?
- Quarlep
- · Replies 9 ·
Graduate Triplet and Singlet Helium States
- Jdraper
- · Replies 2 ·
Graduate Collapse and Peres' Coarse Graining
- atyy
- · Replies 129 ·
Graduate Is the time-derivative Hermitian?
- mjordan2nd
- · Replies 8 ·
Graduate Is There an Experimental Apparatus to Determine Photon Propagation Mechanism?
- TBag
- · Replies 7 ·
Graduate Article about creating molecules from photon
- bubblewrap
- · Replies 11 ·
Graduate Can the Mossbauer Effect Occur in Liquids?
- edpell
- · Replies 1 ·
Graduate Uncertainty in spin on multiple axes
- space-time
- · Replies 4 ·
Graduate Are photons imaginary particles?
- Invutil
- · Replies 5 ·
Graduate Heisenberg's Uncertainty Principle using Linear Algebra
- rpthomps
- · Replies 4 ·
Graduate Selection of domain and codomain for wave function
- Stephen Tashi
- · Replies 17 ·
Graduate Quantum imaging with undetected photons - adding of states
- Sonderval
- · Replies 7 ·
Graduate Concerning Quantum Phenomenon the Center of the Torus
- Symmetry777
- · Replies 4 ·
Graduate Understanding Quantum State Preparation: The Significance of |u> and |d> Vectors
- Quarlep
- · Replies 2 ·
Graduate Emergent time - emergent space?
- Bojan Keevill
- · Replies 4 ·
Graduate Ψ1,ψ2 same E, p, are ⊥; find Ωψ1=ω1ψ1, Ωψ2=ω2ψ2; ω1≠ω2?
- Spinnor
- · Replies 1 ·
Graduate Is the electromagnetic field more or less real than the quantum wavefunction?
- LaserMind
- · Replies 6 ·
Graduate What does frequency mean for a photon?
- Daniel Wqw
- · Replies 12 ·
Graduate Do spinors still do "funky" weird stuff in 1+1 spacetime?
- Spinnor
- · Replies 6 ·
Graduate How to treat spin orbit operator directly
- hokhani
- · Replies 5 ·
Graduate Dirac spinor in 1+1d, do the 2 components represent spin?
- Spinnor
- · Replies 2 ·
Graduate Do photons explain FM and AM radio reception and Doppler effects?
- jaydnul
- · Replies 7 ·
Graduate What happens to electron wave as it travles to light speed
- 1832vin
- · Replies 3 ·
Graduate Effective occupation number of photon
- Jeffrey Yang
- · Replies 2 ·
Graduate Gauge Fixing Term and Equations of Motion
- the_pulp
- · Replies 5 ·
Graduate Phasing of spin due to a radiofrequency pulse
- mkj
- · Replies 6 ·
Graduate Virtual particles coming into existence
- acesuv
- · Replies 15 ·
Graduate Light's orbital angular momentum
- Khashishi
- · Replies 6 ·
Graduate Quantum theory of radiation
- wasi-uz-zaman
- · Replies 3 ·
Undergrad What is the concept of photon momentum in simple experiments?
- mac_alleb
- · Replies 13 ·
Graduate Cavity quantum electrodynamics
- wasi-uz-zaman
- · Replies 6 ·
Graduate Zero Point Energy: Is it Present in Cavity Only?
- wasi-uz-zaman
- · Replies 2 ·
Graduate What Defines a Local Operator in Position Space?
- geoduck
- · Replies 3 ·
Graduate How Does Measurement Affect Photon Behavior in the Double Slit Experiment?
- Jip
- · Replies 3 ·
Graduate Double-slit experiment and gravity
- Ookke
- · Replies 13 ·
Graduate Possible Logical Flaw in Sakurai
- JohnZinc
- · Replies 1 ·
Graduate Laser frequency and wave vectors in optical lattices
- KFC
- · Replies 4 ·
Graduate Question About Hilbert Space Convention
- stevendaryl
- · Replies 5 ·
Graduate Strong force and beta function
- acegikmoqsuwy
- · Replies 2 ·
Graduate Do electrons exhibit wave behavior before passing through the slits?
- diemilio
- · Replies 31 ·
Graduate Are these articles proof that wave function is real?
- Nick V
- · Replies 12 ·
Graduate Ways to put subatomic particles in indeterminate state
- sanpkl
- · Replies 3 ·
Graduate Complete set of eigenvectors question
- Clear Mind
- · Replies 7 ·