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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.

Quantum Interpretations and Foundations

Undergrad "The wavefunction never collapses"
Undergrad Let's get it right about Electron Waves
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Graduate The magnetic field in Stern-Gerlach
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Graduate Quantum myth 4: The only reality is the measured reality
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Graduate Why did Schrodinger call his equation eigenvalue problem?
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Graduate Calculating Time Evolution of Density Matrix
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Graduate Quantum Entanglement: What Happens & Why?
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Graduate Temperature and quantum physics
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The title? (one of Dirac's books)
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High School Red Light in Darkrooms: Benefits for Photographic Film
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Graduate Stern Gerlach Gradient Field Strength
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Graduate Psi^4 Theory: A Fermion with Quartic Self-Interaction
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Graduate Question on quadratic fluctuations in the path integral formalism
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Graduate FTL Communication-Best Candidate?
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Graduate Natural Eigenbasis composite 2 X Spin 1/2 system
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Graduate Understanding the Physical Meaning of Pauli Matrices and Electron Spin
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Undergrad The Power of Photon Theory: How UV & IR Light Affect Skin Cells
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Graduate Particle in Two Boxes: Impact of Dividing Barrier on Energy State
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Graduate Classical -> Quantum Generator of Translation
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Graduate What Is The Origination Of Zero Point Energy
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Graduate I need your help teaching physics
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Graduate What is the justification for the substitution p_x -> (h/i)d/dx in physics?
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Graduate Quantum Mechanics: Fundamental Question
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Graduate How Are the Coefficients of a Qubit's Density Matrix Constrained?
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Graduate What is the Operator for Spin-3/2 Rotation in Fermion Fields?
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Graduate Virtual Particles: Explained in Layman's Terms
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Graduate A practical application of quantum mechanics
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Graduate What is the Force of Radiation Resistance?
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Graduate Time scale of photon absorption in electron
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Graduate Quantum Physics, when is spin-orbit coupling necessary?
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Graduate Effect Preceding Cause: A Quantum Physics Thought Experiment on Usenet
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Graduate Wavefunction collapse => increase in entropy?
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Graduate Hamiltonian & Degeneracy: Conditions
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Undergrad Energy levels in a potential well
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Graduate Hawking radiation - please explain
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Graduate Wave-particle duality/double slit experiment
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Graduate Can Maxwell's equations describe a single photon?
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Graduate Wave-Particle Duality: Photons, Electrons & Heisenberg's Uncertainty
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Graduate Is Angular Momentum Conserved in EPR Pair Measurements?
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Graduate Can every attractive 1D potential have at least one bound state?
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Graduate Why permeability equal to unity?
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Graduate The phase velocity of laser light
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Graduate What Defines Quantum Chaos in Experiments?
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Graduate Simple example of the collapse of the wavefunction?
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Graduate Did Exponential Expansion Trigger Early Spontaneous Symmetry Breaking?
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Graduate Can Planck Units Truly Redefine Our Understanding of the Universe?
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Graduate Written in the skies: why quantum mechanics might be wrong
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Graduate Free Particle Wavepacket Spreading: Is it True?
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Graduate Particle in an infinite potential well, showing the uncertainty in x
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Graduate Understanding Time-Dependent Probability in Quantum Mechanics
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Graduate About Schrodinger eq. and the potential step case with E = V0
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Graduate Complex Conjugate of Fourier Transform
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Graduate Degrees of Freedom of an electron
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Graduate Boltzmann Factor in QM Language
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Graduate How Do I Work Out the Anti-Commutation Relations in QFT? (Srednicki)
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Graduate When can we ignore the delta function in th Feynman rules?
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Graduate Is Roger Penrose's Corkscrew Model of Magnetic Attraction Valid?
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Graduate Where does phi go in the probability density for hydrogen?
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Graduate Schrodingers Cat and time evolution
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Graduate Hamiltonian Matrix Eq. 8.43 Explained - Feynman III Quantum Mechanics
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Graduate Energy & Fields: Uncovering the Mysteries of Modern Physics
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Graduate Solving Schrodinger's Cat Paradox: Is a Superman the Answer?
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Graduate What is your favored interpretation of quantum mechanics?
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Graduate Exploring Properties of Virtual Photons in Positive/Negative Interactions
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Undergrad Why Angular momentum is important?
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Graduate Hamiltonian and Lagrange density
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Graduate SINGLE e-/photon diffraction patterns.
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High School Possible to make 2 beams of light cancel?
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Graduate Is the Radial Momentum Operator Hermitian?
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Undergrad Light, Vacuum, Speed, and Measurements
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Graduate Photon Pairs - Can photons travel in pairs?
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Graduate Microscopy using photons versus electrons
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Graduate Double-Slit experiment in Quaternion Quantum Mechanics?
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High School Where Do Electrons Move in Multi-Dimensional Space?
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Graduate Wave-Particle Duality Theory: Explaining Electron Properties
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Graduate Explicit expressions for creation/annihilation operator of the free scalar field
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Graduate Structure of an Atom: Quantum Physics & Basic Measurement
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Graduate Does the State Vector in Quantum Mechanics Move at the Speed of Light?
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Graduate Commutator relations for the Ehrenfest Theorem
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Graduate Deriviation of WKB approximation
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Graduate Klein-Gordon Momentum Question
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Graduate Calculate Effective Action in Quantum Field Theory
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Graduate Quantum Particle in Two Boxes: Poll on Wave Function and Particle Location
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Graduate Q&A: How Does a Photon Have Momentum w/o Mass?
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Graduate Can Scale Relativity Bridge Quantum Mechanics and General Relativity?
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Graduate Questions about Bell: Answering Philosophical Difficulties
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Graduate Quantum Calculus: Fund. Theorem & Plank Time?
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Graduate Information Paradox confirmed?
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Graduate Are Equal-Time Commutators Essential in QFT?
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Undergrad Understanding Vacuum Photocell: Explanation, Polarities, and Cut-off Potential
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Graduate Can expectation value of observables be imaginary?
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Graduate Why Can Electrons Tunnel Through Finite Barriers but Not Infinite Wells?
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Graduate Understand Mandl & Shaw's Derivation of Moller Scattering
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Undergrad Atomic Isolation: Conditions for Line Spectra
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Graduate Exploring the Amplitude of de Broglie Waves: A Question on Mass and Velocity
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Graduate Coleman's QFT lectures on video
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Graduate Energy changes of a particle tunneling through a barrier
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Graduate Is it possible to determine if a photon is entangled?
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Graduate What is density matrix of one on two entangled qubits?
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Graduate Potential commutes with position?
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Graduate Renormalization - a dippy process - R. Feynman
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