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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 Valid local explanation of Bell violations? (Pegg et al., 1999; 2008)
Undergrad What stands for probability in QFT?
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Undergrad Excited system in a harmonic potential
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High School Photon detection methods -- do they always involve displacing an electron?
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Graduate First Course in Graduate Quantum Mechanics Resources
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Undergrad Matrix Notation for potential in Schrodinger Equation
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Undergrad The derivative of the complex conjugate of the wave function
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Graduate Thought experiment in relativistic quantum mechanics?
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Undergrad Can we quantize a static EM field?
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Undergrad Does mean velocity equal group velocity of wave packets in QM?
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High School Double slit question - how far apart can the slits be?
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Density Operators, Trace and Partial Trace
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Undergrad Classical equivalent of scalar free field in QFT
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Undergrad What does this tricky quantum mechanics equation mean?
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Graduate Dirac Notation: Why is order reversed in ket expasion?
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Graduate Quantum CSP Algorithm for Aircraft Recovery Problem
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Undergrad Does the Wigner-Eckart theorem require good quantum numbers?
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Graduate Conditional phase shift for Grover's algorithm
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High School How to construct 4 in+out Feynman diagram from 3 Feynman diagram?
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Undergrad How to interpret integration by parts
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High School Questions about double slit experiments
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Undergrad Number of photons in an arbitrary EM field
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High School Why do we know all photons have same speed as the speed of light?
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Undergrad What is difference between EM wave and EM field?
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Undergrad Equivalence of these quantum circuits
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Undergrad Black holes -- Can you chill the particles of a black hole?
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Graduate Dispersion of the wave packet over time
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Graduate Where Can I Find the Proof of Asymptotically Helical Trajectory in a Lattice?
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Undergrad A statement in a superposition of being true and false?
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Undergrad Are all processes CPT symmetric like measurement, stimulated emission?
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High School U.Delft Quantum Results - Is the explanation parsimonious?
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Graduate Interface between Biological Physics and Quantum Physics
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Graduate Conditional time evolution entropy and the experimenter?
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Undergrad "Packing of energy" question related to the ultraviolet catastrophe
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Undergrad Quantum Computing "Not" Operation - Mathematics Steps For Deriving It
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High School Double slit experiment with electrons
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Graduate Hamiltonian commutes with a parity operator -- What does that mean?
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High School Particles with small Wavelengths passing through huge slits?
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Graduate Understanding Counter Term Renormalization in Quantum Field Theory
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Undergrad Why is h Not Known as Wien's Constant? | Explanation
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Undergrad Realizing a Quantum Mechanical Watch-Stop
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Graduate Quantum tomography: Where does the magic happen?
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Graduate Photon Statistics in QFT & String Theory
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Graduate What is a good basis for coupled modes in a resonator?
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Graduate Feynman solution for the radial wave function of the hydrogen atom
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Path Integrals in Wolfram Mathematica
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Graduate Position is no more an operator in QFT
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Undergrad Matrix construction for spinors
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Undergrad Parity Eigenstates: X Basis Explanation
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Graduate Restricted Boltzmann machine for Quantum state tomography
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Undergrad Can a State with Nonmeasurable Local Properties be Described by Quantum Rules?
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Undergrad Indistinguishable particles in separate boxes
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High School Fermions, Pauli and antisymmetry
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High School Does the wave function change from the viewpoint of the photon?
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Undergrad Why does "control" mean "coherency" in Wigner's friend paradox?
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Graduate Wavefunction of the Universe considering all possible boundaries?
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Undergrad Bell measurement of distant particles
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High School Do Photons Decay or Have a Half-Life?
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High School Gravitational signature of a photon in a double slit experiment
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Undergrad Hydrogen atom: Energies and eigenstates
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Undergrad Justification of a trick in solving PDEs arising in Physics
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Undergrad Born rule: time running forwards and backwards?
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Undergrad Why is it that when anti-matter and matter meet they produce energy?
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High School Is a photon an excitation of the electromagnetic field?
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High School What does the energy of a photon convert to with interference?
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High School Entanglement and action at a distance -- What coordinate system?
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Undergrad What makes entanglement so interesting?
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Undergrad Delay in signaling between entanglement particles
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High School Is an electron beam affected by photons?
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Undergrad Does photon self energy contribute to the speed of light?
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High School Please gradually expain principles of atomic clocks
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Undergrad Understanding Strings: Basic Concepts Explained
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High School Planck's equation and upper and lower bounds on the energy of a photon
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Undergrad Are Virtual Exchange Particles a Valid Concept in Understanding Remote Forces?
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High School How do we know that the measurement affects the result?
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Undergrad Completeness relations in a tensor product Hilbert space
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High School Particle annihilation -- Is it instantaneous?
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Undergrad Article on photon wave-particle duality
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Undergrad Are electro-magnetic waves the same as the wave function?
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High School Does retrocausality follow from logic?
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Graduate How useful are quantum-classical hybrid theories?
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Undergrad Potential step and tunneling effect
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Undergrad Interference in double-slit with single photons
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Undergrad Discreteness of bound vs unbound states
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What is a useful way to talk about eigenstates of the position operator
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Undergrad Can Bell's Theorem Disprove This Density Matrix Representation?
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Graduate Are there two different adjoint representations used in the SM?
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Undergrad The velocity of Pilot-wave and the Double slit experiment
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Graduate Adjoint representation and spinor field valued in the Lie algebra
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High School Destructive interference and conservation of momentum
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High School Quantum eraser and time travel
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Undergrad Information content of a qubit
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Undergrad How do we know that the raising operator only raises the state by one step?
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Undergrad Separating particles in a zero point energy field
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Undergrad Double slit experiment and the Uncertainty Principle
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Undergrad Fermi gas in relativistic limit
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Graduate Geometry of matrix Dirac algebra
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Undergrad Zero-point energy of the harmonic oscillator
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Undergrad Lyman-##\alpha## Wavelength: Hydrogen's Region in Spectrum
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High School Will brain-computer interfaces reveal more about QM?
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Undergrad Doesn't Schrodinger's Cat start to decay?
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