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 Wavefunction matching two different H, not just V
- SturgySturges
- · Replies 3 ·
Undergrad Delayed choice, pseudo-retrocausality, massive particles
- Quantum of Solace
- · Replies 23 ·
Undergrad Particle number conservation and motivations for QFT
- Frank Castle
- · Replies 22 ·
Undergrad Zeeman effect sign of circular polarization
- Khashishi
- · Replies 3 ·
Graduate What is the physical significance of the unitary matrix in this optical device?
- naima
- · Replies 12 ·
Undergrad Why are total orbital QN l,m zero for closed subshell?
- goodphy
- · Replies 10 ·
High School Is the wave function physical ?
- DoobleD
- · Replies 26 ·
High School Accuracy in speed of photon - uncertainty?
- chester20080
- · Replies 14 ·
Undergrad Evalutaion of Schrodinger's equation
- student354
- · Replies 1 ·
Undergrad Comments on updated delayed choice erasure graphic
- Strilanc
- · Replies 1 ·
High School Why is momentum the fourier transform of the wavefunction ?
- DoobleD
- · Replies 6 ·
Undergrad Sign of amplitude in sinusoidal wave boundary conditions
- Soren4
- · Replies 4 ·
High School What is the origin of Observables?
- entropy1
- · Replies 31 ·
High School An application of the uncertainty principle
- Youyang Zhao
- · Replies 2 ·
Undergrad How can you visualize the Higgs field, or can you?
- scientepid
- · Replies 4 ·
Undergrad Spontaneous Absorption of Photons in Two State Quantum System
- Smalde
- · Replies 6 ·
Undergrad Finding probability of changing states
- TheCanadian
- · Replies 1 ·
Graduate How to understand the electric-field operator?
- Jeffrey Yang
- · Replies 6 ·
High School Polytropic process with heat addition
- Rakesh bhatoa
- · Replies 2 ·
Undergrad Could you provide me a selection rule?
- goodphy
- · Replies 3 ·
Undergrad What is a time-dependent operator?
- weezy
- · Replies 18 ·
High School Understanding Different Quantum Interactions
- jackferry
- · Replies 1 ·
Undergrad Why does momentum operator act on both bra and ket in <x|p|ψ>?
- dyn
- · Replies 7 ·
Undergrad What is a coherent pulse of specified area?
- TheCanadian
- · Replies 4 ·
Graduate Fock space and Poincaré invariance
- Gedankenspiel
- · Replies 24 ·
Undergrad Mind Bending Double-Slit Diffraction Thought Experiment
- theoligarch dot com
- · Replies 13 ·
High School Is Gravitational Quantization Supported by the Stability of Orbital Electrons?
- Cato
- · Replies 17 ·
Undergrad Is spacetime a field or are fields excitations of spacetime?
- Quest_Ion
- · Replies 3 ·
High School Neutrinos and Fermi-Dirac Distribution
- TDanskin
- · Replies 2 ·
Undergrad What is the reason behind uncertainty principle?
- weezy
- · Replies 3 ·
High School What is the reason for Schrodinger's cat experiment?
- steveJOBS
- · Replies 9 ·
Graduate Interpreting the K-G Annihilation Operator Expression
- bolbteppa
- · Replies 5 ·
Undergrad Can a Discontinuous Wave Function Be Acceptable in Quantum Mechanics?
- Moses Lee
- · Replies 6 ·
Undergrad Understanding ΔEΔt uncertainty
- hideelo
- · Replies 12 ·
Undergrad Understanding Internal State in Quantum Systems with Cold Atoms
- KFC
- · Replies 7 ·
High School Understanding Correlations in Non-Realism: The Role of Extra Variables?
- gva
- · Replies 9 ·
High School Wave Function of a Proton in a Box with a Slide
- Einstein's Cat
- · Replies 7 ·
Graduate QFT and transitions between momentum states
- hilbert2
- · Replies 1 ·
High School Counterarguments to Wigner's Friend as a refutation of wave function collapse
- gva
- · Replies 20 ·
Graduate Uncertainties in Poisson processes
- marco1235
- · Replies 4 ·
Undergrad The Lagrangian of a Coherent State
- Blabbityblobo667
- · Replies 2 ·
High School Should Fourier Transforms Be Taught Before the Heisenberg Uncertainty Principle?
- houlahound
- · Replies 6 ·
High School How does Bell's inequality rule out realism?
- PhysicsEntanglment
- · Replies 79 ·
Undergrad Field eigenstates and path integral formulation
- Alhaurin
- · Replies 4 ·
Graduate Significance of "at an event" in conjugate variable definitions
- anorlunda
- · Replies 7 ·
Undergrad Time evolution after "turning off" square well
- Swamp Thing
- · Replies 5 ·
Undergrad What is the angle in the action-angle uncertainty principle?
- nomadreid
- · Replies 6 ·
High School Other terms for indeterministic hidden variables
- gva
- · Replies 10 ·
Undergrad Two photon absorption or multi-photon absorption?
- fog37
- · Replies 6 ·
High School Why is probability defined in space rather than at a point in quantum mechanics?
- Naman Jain Kota
- · Replies 3 ·
High School Is an Electron Both a Wave and a Particle Simultaneously?
- Deepak K Kapur
- · Replies 13 ·
Undergrad Quantum Superposition While Observing Phenomena?
- DQuantum14
- · Replies 4 ·
High School Energy density of charged capacitor via QFT
- Spinnor
- · Replies 1 ·
Undergrad Strong Force and Wave function collapse
- Bill Myk
- · Replies 1 ·
Undergrad What is the Eigenvalue of Coherent States?
- dyn
- · Replies 17 ·
High School What is oscillating in the de Broglie wave of a moving electron?
- Dexter Neutron
- · Replies 5 ·
Undergrad Is There a Reliable Source Code for Quantum Key Distribution?
- okigbo anthony
- · Replies 5 ·
Graduate Double Slit--closing a slit while particle is in flight
- tpeabody
- · Replies 6 ·
High School Classical experiment violates Bell
- DirkMan
- · Replies 3 ·
High School Schrodinger cat superperposition vs sharp state
- GC2893
- · Replies 3 ·
Graduate Green's function at boundaries
- mupsi
- · Replies 1 ·
Undergrad Delayed choice quantum eraser scanning telescope
- 0xDEAD BEEF
- · Replies 13 ·
Undergrad Big Freeze: Resolving the Universe's End?
- Galactic explosion
- · Replies 4 ·
Undergrad Planck-Einstein: how does it separate classical from Quantum?
- Zero-shift
- · Replies 3 ·
Undergrad Infinite square well solution - periodic boundary conditions
- McLaren Rulez
- · Replies 15 ·
Undergrad A thought about parallel universe
- rizkiyoist
- · Replies 9 ·
Undergrad What is the relation between Temperature and Quantum State?
- jonjacson
- · Replies 4 ·
High School Does weak measurement cause mixed state?
- entropy1
- · Replies 1 ·
Undergrad Radioactive decay, falling pencils and the uncertainty principle
- Happiness
- · Replies 2 ·
Graduate Quantum Computing: Difference vs Normal Computers
- MasterSashin04
- · Replies 3 ·
Undergrad What happens to Quantum decoherence at Absolute Zero?
- Oganesson
- · Replies 3 ·
Undergrad Regarding the eigenvalues of the translation operator
- otaKu
- · Replies 3 ·
Undergrad Calculation of vibronic couplings
- slawa
- · Replies 1 ·
Undergrad Relationship of Light's Wavelengthvs and Probability Wave?
- Chris Frisella
- · Replies 2 ·
Undergrad Impossible to exclude hidden variables without entanglement?
- greypilgrim
- · Replies 5 ·
Undergrad Is the uncertainty principle an ontological statement?
- Happiness
- · Replies 10 ·
High School Can deterministic processes underlie quantum probability distributions?
- raphalbatros
- · Replies 86 ·
Undergrad Uncertainty Principle: Theorem or Principle?
- facenian
- · Replies 3 ·
High School Pseudorandomness of correlation
- entropy1
- · Replies 5 ·
Undergrad Justification for introducting "Disentaglers" in MERA
- Jimster41
- · Replies 2 ·
Undergrad What corresponds to the wave function in quantum field theory?
- MichPod
- · Replies 31 ·
Graduate Unitary evolution while rapid change of potential?
- jarekduda
- · Replies 7 ·
Undergrad Can some properties of a particle be collapsed while others remain in superposition?
- edenenix15
- · Replies 2 ·
High School What to study in quantum mechanics after Susskind's Theoretical minimum?
- entropy1
- · Replies 82 ·
Undergrad Hyperfine splitting and relative intensity of spectral lines
- victorhugo
- · Replies 4 ·
Undergrad Question on photoelectric effect and this particular experim
- CJit
- · Replies 7 ·
High School Superposition at absolute zero
- DirkMan
- · Replies 1 ·
High School QFT for Gifted Amateurs: Preparing for Advanced QFT
- Mr-R
- · Replies 2 ·
Undergrad Do real electrons interact with virtual particle pairs in path integrals?
- asimov42
- · Replies 1 ·
Undergrad Quantum Darwinism and Consciousness (?)
- durant35
- · Replies 15 ·
Graduate Why does an OPA produce squeezed signal and idler photons?
- epsilon
- · Replies 1 ·
Undergrad Evenly pump a sphere of lasing material
- Spinnor
- · Replies 2 ·
Undergrad Kronecker delta by using creation/annihilation operators
- Faust90
- · Replies 3 ·
Undergrad What is the significance of the semicolon in function notation?
- Swamp Thing
- · Replies 4 ·
Undergrad Could entangled particles remain connected through time?
- Suppaman
- · Replies 112 ·
High School Decoherence and Counterfactual Definiteness
- gva
- · Replies 1 ·
Graduate Qn on photon statistics (second order correlation function)
- Tainty
- · Replies 2 ·
High School Can entangled particles communicate faster than light through interference?
- ed777
- · Replies 4 ·
Graduate Why are the Tadpole Equations Called so?
- Kfir Dolev
- · Replies 1 ·
Graduate Renormalization Scheme Dependence of Vevs
- Kfir Dolev
- · Replies 1 ·