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 Ladder Operator/hermiticity
- GAGS
- · Replies 5 ·
Graduate What are the Consequences of Varying Planck's Constant?
- a.a
- · Replies 20 ·
Graduate Quantum Wave Function: Dependency & Increment Mystery
- m-i-t-o
- · Replies 2 ·
Graduate How abou the hidden variable theory?
- xylai
- · Replies 2 ·
Graduate Weak Field Tensor: Explained by Ben
- Ben1729
- · Replies 2 ·
Undergrad Tunneling through a PE barrier
- kalery
- · Replies 3 ·
Solve "And God Said" Equation on Postcard | D
- Redmonkiee
- · Replies 2 ·
Graduate How to prove Coleman's formula for the ratio of two determinants?
- omg!
- · Replies 7 ·
Graduate Double slit electron experiment
- George5
- · Replies 10 ·
Graduate What is the meaning of the lower case i in the Schrodinger equation?
- bluestar
- · Replies 9 ·
Graduate QM calculation of vacuum energy
- battery
- · Replies 3 ·
Graduate What Causes Quantum Foam to Form at a Sub-Planck Level?
- artkin76
- · Replies 2 ·
Undergrad Let's get it right about Electron Waves
- rohanprabhu
- · Replies 10 ·
Graduate The magnetic field in Stern-Gerlach
- Chen
- · Replies 6 ·
Graduate Quantum myth 4: The only reality is the measured reality
- pellman
- · Replies 69 ·
Graduate Why did Schrodinger call his equation eigenvalue problem?
- kahoomann
- · Replies 2 ·
Graduate Calculating Time Evolution of Density Matrix
- dg88
- · Replies 1 ·
Graduate Quantum Entanglement: What Happens & Why?
- hadeka
- · Replies 9 ·
Graduate Temperature and quantum physics
- student85
- · Replies 6 ·
The title? (one of Dirac's books)
- xylai
- · Replies 3 ·
High School Red Light in Darkrooms: Benefits for Photographic Film
- a.a
- · Replies 3 ·
Graduate Stern Gerlach Gradient Field Strength
- rwhitman
- · Replies 1 ·
Graduate Psi^4 Theory: A Fermion with Quartic Self-Interaction
- jdstokes
- · Replies 1 ·
Graduate Question on quadratic fluctuations in the path integral formalism
- omg!
- · Replies 1 ·
Graduate FTL Communication-Best Candidate?
- MonstersFromTheId
- · Replies 21 ·
Graduate Natural Eigenbasis composite 2 X Spin 1/2 system
- cathalcummins
- · Replies 6 ·
Graduate Understanding the Physical Meaning of Pauli Matrices and Electron Spin
- GAGS
- · Replies 4 ·
Undergrad The Power of Photon Theory: How UV & IR Light Affect Skin Cells
- a.a
- · Replies 8 ·
Graduate Particle in Two Boxes: Impact of Dividing Barrier on Energy State
- chrisphd
- · Replies 2 ·
Graduate Classical -> Quantum Generator of Translation
- Bork
- · Replies 5 ·
Graduate What Is The Origination Of Zero Point Energy
- GAGS
- · Replies 1 ·
Graduate I need your help teaching physics
- ΔxΔp≥ћ/2
- · Replies 53 ·
Graduate What is the justification for the substitution p_x -> (h/i)d/dx in physics?
- gn0m0n
- · Replies 3 ·
Graduate Quantum Mechanics: Fundamental Question
- Domnu
- · Replies 2 ·
Graduate How Are the Coefficients of a Qubit's Density Matrix Constrained?
- Dragonfall
- · Replies 17 ·
Graduate What is the Operator for Spin-3/2 Rotation in Fermion Fields?
- tmc
- · Replies 6 ·
Graduate Virtual Particles: Explained in Layman's Terms
- GRB 080319B
- · Replies 1 ·
Graduate A practical application of quantum mechanics
- Raina
- · Replies 5 ·
Graduate What is the Force of Radiation Resistance?
- arhanbezbora
- · Replies 2 ·
Graduate Time scale of photon absorption in electron
- I_wonder
- · Replies 1 ·
Graduate Quantum Physics, when is spin-orbit coupling necessary?
- Antti
- · Replies 1 ·
Graduate Effect Preceding Cause: A Quantum Physics Thought Experiment on Usenet
- Robert Noel
- · Replies 69 ·
Graduate Wavefunction collapse => increase in entropy?
- 2Tesla
- · Replies 14 ·
Graduate Hamiltonian & Degeneracy: Conditions
- omg!
- · Replies 16 ·
Undergrad Energy levels in a potential well
- physmile
- · Replies 3 ·
Graduate Hawking radiation - please explain
- Chaos' lil bro Order
- · Replies 18 ·
Graduate Wave-particle duality/double slit experiment
- francirp
- · Replies 28 ·
Graduate Can Maxwell's equations describe a single photon?
- Usaf Moji
- · Replies 7 ·
Graduate Wave-Particle Duality: Photons, Electrons & Heisenberg's Uncertainty
- SpaceExplorer
- · Replies 7 ·
Graduate Is Angular Momentum Conserved in EPR Pair Measurements?
- lark
- · Replies 16 ·
Graduate Can every attractive 1D potential have at least one bound state?
- luisgml_2000
- · Replies 4 ·
Graduate Why permeability equal to unity?
- iLIKEstuff
- · Replies 1 ·
Graduate The phase velocity of laser light
- redtree
- · Replies 2 ·
Graduate What Defines Quantum Chaos in Experiments?
- xylai
- · Replies 2 ·
Graduate Simple example of the collapse of the wavefunction?
- Ulysees
- · Replies 41 ·
Graduate Did Exponential Expansion Trigger Early Spontaneous Symmetry Breaking?
- bogie
- · Replies 1 ·
Graduate Can Planck Units Truly Redefine Our Understanding of the Universe?
- Dropout
- · Replies 16 ·
Graduate Written in the skies: why quantum mechanics might be wrong
- SF
- · Replies 13 ·
Graduate Free Particle Wavepacket Spreading: Is it True?
- Adeimantus
- · Replies 8 ·
Graduate Particle in an infinite potential well, showing the uncertainty in x
- SuperNomad
- · Replies 4 ·
Graduate Understanding Time-Dependent Probability in Quantum Mechanics
- Irid
- · Replies 3 ·
Graduate About Schrodinger eq. and the potential step case with E = V0
- Tavo
- · Replies 6 ·
Graduate Complex Conjugate of Fourier Transform
- Epoch12000BC
- · Replies 3 ·
Graduate Degrees of Freedom of an electron
- Neitrino
- · Replies 3 ·
Graduate Boltzmann Factor in QM Language
- andrewm
- · Replies 3 ·
Graduate How Do I Work Out the Anti-Commutation Relations in QFT? (Srednicki)
- trinitron
- · Replies 14 ·
Graduate When can we ignore the delta function in th Feynman rules?
- Vereinsamt
- · Replies 1 ·
Graduate Is Roger Penrose's Corkscrew Model of Magnetic Attraction Valid?
- Usaf Moji
- · Replies 10 ·
Graduate Where does phi go in the probability density for hydrogen?
- Signifier
- · Replies 2 ·
Graduate Schrodingers Cat and time evolution
- EddieZ
- · Replies 4 ·
Graduate Hamiltonian Matrix Eq. 8.43 Explained - Feynman III Quantum Mechanics
- mkbh_10
- · Replies 1 ·
Graduate Energy & Fields: Uncovering the Mysteries of Modern Physics
- zonde
- · Replies 11 ·
Graduate Solving Schrodinger's Cat Paradox: Is a Superman the Answer?
- ssampak
- · Replies 1 ·
Graduate What is your favored interpretation of quantum mechanics?
- Demystifier
- · Replies 64 ·
Graduate Exploring Properties of Virtual Photons in Positive/Negative Interactions
- Usaf Moji
- · Replies 1 ·
Undergrad Why Angular momentum is important?
- russell23
- · Replies 5 ·
Graduate Hamiltonian and Lagrange density
- kaksmet
- · Replies 4 ·
Graduate SINGLE e-/photon diffraction patterns.
- neurocomp2003
- · Replies 13 ·
High School Possible to make 2 beams of light cancel?
- jasonhtml
- · Replies 4 ·
Graduate Is the Radial Momentum Operator Hermitian?
- plarq
- · Replies 1 ·
Undergrad Light, Vacuum, Speed, and Measurements
- DeepSeeded
- · Replies 2 ·
Graduate Photon Pairs - Can photons travel in pairs?
- Buckeye
- · Replies 7 ·
Graduate Microscopy using photons versus electrons
- redtree
- · Replies 1 ·
Graduate Double-Slit experiment in Quaternion Quantum Mechanics?
- robphy
- · Replies 4 ·
High School Where Do Electrons Move in Multi-Dimensional Space?
- curiousgirl
- · Replies 10 ·
Graduate Wave-Particle Duality Theory: Explaining Electron Properties
- rlduncan
- · Replies 47 ·
Graduate Explicit expressions for creation/annihilation operator of the free scalar field
- masudr
- · Replies 2 ·
Graduate Structure of an Atom: Quantum Physics & Basic Measurement
- nuby
- · Replies 5 ·
Graduate Does the State Vector in Quantum Mechanics Move at the Speed of Light?
- Usaf Moji
- · Replies 7 ·
Graduate Commutator relations for the Ehrenfest Theorem
- tommy01
- · Replies 2 ·
Graduate Deriviation of WKB approximation
- Repetit
- · Replies 5 ·
Graduate Klein-Gordon Momentum Question
- div curl F= 0
- · Replies 4 ·
Graduate Calculate Effective Action in Quantum Field Theory
- Lepton_vn
- · Replies 1 ·
Graduate Quantum Particle in Two Boxes: Poll on Wave Function and Particle Location
- bg032
- · Replies 11 ·
Graduate Q&A: How Does a Photon Have Momentum w/o Mass?
- Ed Aboud
- · Replies 7 ·
Graduate Can Scale Relativity Bridge Quantum Mechanics and General Relativity?
- peter0302
- · Replies 16 ·
Graduate Questions about Bell: Answering Philosophical Difficulties
- krimianl99
- · Replies 129 ·
Graduate Quantum Calculus: Fund. Theorem & Plank Time?
- duffbeerforme
- · Replies 1 ·
Graduate Information Paradox confirmed?
- vincentm
- · Replies 3 ·
Graduate Are Equal-Time Commutators Essential in QFT?
- pellman
- · Replies 10 ·