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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 On computing quantum waves exactly from classical action
Undergrad How to make light act like a particle?
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Undergrad Ionisation and the Photoelectrical Effect
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Graduate Hydrogen on one side, Helium on the other, and nothing in between ?
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Undergrad What CAUSES black cody radiation?
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Graduate What is the definition of a momentum *measurement*?
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High School Reflecting photons off a surface
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Graduate How Is the Thickness of a Quantum Well Determined?
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Graduate Does a Free Particle in Quantum Mechanics Have Constant Energy?
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Graduate Most accurate form of maxwell equations?
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Graduate Spontaneous Symmetry breaking,phase factor
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Graduate Perpendicularity of quantuum states
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Graduate Understanding X Quantum Gate: Act on |i> State?
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Graduate Revisiting the Born Rule: Implications for Cosmology
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Graduate Is Quantum Entanglement Just Correlation or a Real Physical Process?
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Graduate Feynman diagram: incoming and outgoing particles
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Graduate Waves - bound and unbound states
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Graduate Four momentum vector from energy-momentum-tensor
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Graduate Cassimir effect on a grand scale
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Graduate Is there a paradox involving the Dirac equation and commutation with time?
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Graduate How does the Schrödinger equation lead to the QM theory of measurement?
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Graduate Doubting the Probabilistic Future: Can You Prove Me Wrong?
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High School Can energy be lost from a Photon?
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Graduate Black body radiation: can you help me understand it (better)?
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Graduate Can Virtual Particles in the Vacuum be Directly Detected?
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Graduate Yes, that helps clarify things. Thank you for the explanation.
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Graduate QM & Hardy's Paradox: Bohm, Copenhagen, MWI
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Graduate Faster-than-light communication
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Graduate Synthesis between Quantum Chaos and QFT.
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Undergrad How does the Electron get knocked off by a photon
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Graduate What Is the Casimir Effect and Its Relation to Vacuum Energy?
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Graduate Solution gross pitaevskii equation
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Graduate Angular Momentum & Plank's Constant
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Undergrad Question about visible light properties.
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Graduate Why don't the Slits collapse the wave function?
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Graduate Did photon obey Uncertainity Principle?
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Writing a science fiction novel
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Graduate Commutator of Position and Energy
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Graduate Antimatter interact with massive matter through gravity.
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Graduate Particle collisions collapse wave function?
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Graduate About Feynman rules for an external field
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Graduate Young's Double Slit experiment
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Graduate Understanding the Energy of a Particle in Momentum Representation of QM
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Graduate What makes schrodinger cat quantum?
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Graduate Does a Collision in Space Affect a Spaceship's Center of Mass Motion?
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Graduate QM Questions: Intro & Two Conceptual Issues
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High School Electron Orbits and Nuclei 2- Rotation vs Orbital Motion
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Graduate Simultaneous diagonalization and replacement of operators with eigenvalues ?
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High School Does Light Have a Charge? Mystery Explored
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Graduate Generator of rotations rotations of WHAT?
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Graduate Expectation of the Wilson Loop
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Graduate Is 3s to 2s transition for Hygrogen forbidden?
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Graduate Very elementary notation question
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Undergrad Uncertainty in simple harmonic oscilator
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Graduate Understanding UV/IR Terminology in Physics
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Graduate Comparing Electrons & Quarks: Mass, Charge & Size
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Graduate The Difference Between a Few Terms
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Graduate Lorentz Algebra in Boosts for the spin-1/2 Dirac Field
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Graduate Path Integrals in QED: Solve by Substituting Classical Solution?
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Graduate A silly question I'm sure about Feynman's many paths
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Graduate Moments in QM: When Can I Say JLS^2 Approx Equal JL+S?
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Graduate Uncertainty principle violation?
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Graduate Quantum Tunneling - some silly thoughts
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Graduate Parallel universes and the Quantum Field
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Undergrad Electron Phasepositive and negative?
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Graduate Cutting off our Ignorance:renormalization
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High School Basic Explanation of Boson: What is it?
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Graduate When does entanglement actually end?
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Graduate Producing Pure States in Practical Systems: Challenges and Compromises
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Undergrad Plotting Orbitals: Easy Formulas for Non-Physicists
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Graduate Why can fermions occupy only one state and
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Graduate Integer quantum hall effect - edge states/bulk effects
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Graduate On the definition of Von Neumann entropy
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Graduate Uncertainty Principle and the size of an atom
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Graduate Auto-Compensating Polarization Changes with Mirror/Reflector and Faraday Mirror
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Graduate What Is the Explanation for the Graviton's Wave Length and Mass?
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Graduate Understanding Bra-Ket Notation in Shankar
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Graduate Schmidt Decomposition: Is It Enough to Find States?
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Graduate Do Scattering Amplitudes Have Dimensions?
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High School Something called wavevector, k
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Graduate What Is the Shape of a Free Electron Wave?
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Graduate Is the Commutation Relation for Angular Operators in Hilbert Space Valid?
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Graduate What is the relationship between matter and waves in quantum mechanics?
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Graduate Is the Matrix Representation of a Unitary Operator Always a Unitary Matrix?
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Graduate If light were an electromagnetic wave
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Graduate Short distance divergences in thermal states
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Graduate Question on step potentials and schrodingers equatio
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Graduate Is the generation of one electron at a time probabilistic or deterministic ?
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Graduate Optical Theorem: Understanding Conservation of Particles & Probability
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Graduate Time Evolution Operator & Classical Hamiltonian: Relating the Two
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Graduate Jahn-teller theorem and the CH_4 molecule
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Graduate Normal coordinate substitutions with periodic boundary conditions
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Graduate Quantum Physics and Parallel Universes and your mind
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Graduate Experimentally Verifying Photon Spin: Beyond Stern-Gerlach
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Graduate Duality of Electron: Mass, Charge and Wave Mechanics
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Graduate Is relativity the ultimate explanation for all uncertainties in physics?
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Graduate Photons and the Uncertainty Principle
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Graduate Quantum Mechianics and Telecommunications Engineering?
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Graduate First Energy Level Meaning: What Does It Mean?
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Graduate From Wave to Ket: Transform State Vector
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Graduate Welcome All: Unravelling the Mysteries of Photons
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