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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

A question about quantum entanglement
Undergrad Scatter radiation and film fogging
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Undergrad On-shell virtual particles and 'physical' Hilbert spaces....
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Undergrad Is a bipartite system necessary for the proof of the PBR theorem?
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Undergrad What do we do with the massive scalar quantum field in QFT?
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Undergrad Why induction requires a magnetic material to produce a current
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High School Compton Effect -- Why is the electron considered to initially be at rest?
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Undergrad Physical meaning of ##\psi_1(x)\hat{A}\psi_2(x)##
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Graduate Diagonalization of 2x2 Hermitian matrices using Wigner D-Matrix
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Graduate Two Different Fock State Inputs into a Beam Splitter
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Undergrad Blackbody Radiation: Questions Answered on Causes & Oscillators
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Undergrad How is the information of a change in position of a star transmitted?
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Graduate When should we use the Langevin equation and when should use Fokker-Planck
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Graduate S-matrix expansion and Wick's theorem
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Undergrad Field Renormalization vs. Interaction Picture
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Graduate Photoelectric effect at metal junctions
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Graduate Complex Numbers Not Necessary in QM: Explained
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Undergrad Photon interference and path differences
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Undergrad Does Bell's theorem imply other Lorentz transformations?
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High School Layman's question re quantum entanglement
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Undergrad Momentum-Position vs. Energy-Time Uncertainty Relations
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Graduate What did Hans Bethe think of von Neumann's quantum logic?
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Undergrad What happens when an object starts to glow?
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Graduate Understanding Harmonic oscillator conventions
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Undergrad What Is the Physical Meaning of Atomic Particle 'Spin'?
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Undergrad Collapse of the wave function under simultaneous measurement
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High School Quantum mechanical model of an atom
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Undergrad Master` Equation for the Penrose-Diosi wavefunction collapse
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Undergrad Photon occupation numbers in relation to the 4-potential
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Undergrad What is SR transformarion for bispinor?
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Undergrad General Implications of the Double-Slit Experiment
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High School The Virtue of Individual Perception RE: Wavefunction Collapse
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Undergrad Let me Know What you Think of This Toy Theory
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Undergrad Is the energy of a burst of light the sum of the energy of each photon?
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Undergrad Trying to Generate Entangled Photons
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Graduate Unitary representations of Lie group from Lie algebra
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Undergrad Calculating group representation matrices from basis vector/function
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High School Entanglement: Behaviour of Particles & Real Life Apps
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Graduate The cnot with outer product control qubit
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Undergrad How Would Afshar's Experiment Affect Entanglement?
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Undergrad Exclusion principle and the distance between two particles
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Undergrad Polarization and Stimulated Emission
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Undergrad Is a Particle Simply the Manifested Kinetic Energy of Its Quantum Field?
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Undergrad Minimum number of cycles in a short pulse laser
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Graduate Dirac Field quantization and anti-commutator relation
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Undergrad Is there a reason eigenvalues of operators correspond to measurements?
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Undergrad The HOM Effect, Path Entanglement, and Generation
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Undergrad Dispersive approximation (limit) in the Jaynes-Cummings Model
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Graduate What is Hermitian? Definition & Summary
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Graduate Definition of Expectation Value (EV)
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Undergrad Hamiltonian Commutation Question
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High School Is Bell's inequality Lorentz invariant?
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High School Notion of a zero dimensional point particle?
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Graduate First Chip-to-Chip Quantum Teleportation
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Graduate Does Dim Reg really avoid a photon mass?
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High School Backscattering of photons in dim = 1
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Undergrad Understanding Spherical Tensors & Their Applications
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High School Neutron Decay Outside of a Nucleus Near Absolute Zero
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Graduate Measurements of multipartite entanglement
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Undergrad Imagining the EPR paradox/quantum entanglement
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Undergrad Entanglement after measurement
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Undergrad The construction of particles in QFT
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Graduate Trace of a product of Dirac Matrices in a Fermion loop
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Undergrad How does a quantum computer work?
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Undergrad Momentum Eigenstates: Writing & Conservation
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Undergrad Why Do We Have The Effect Of Spontaneous Emission And Absorption
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Undergrad What are the degrees of freedom of a quark?
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Undergrad Wave function of a laser beam?
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High School Do photons bunch up at an interface? Can they lase (laze?)
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Undergrad Can a simulation hypothesis simulate quantum physics?
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Undergrad Simulation Hypothesis: Quantum Computer Modeling
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Graduate Vacuum energy density after spontaneous symmetry breaking
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High School Photon Energy & Wave Amplitude
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Undergrad Local Causality and Bell's Second Theorem
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Undergrad Did Erwin Schrödinger propose that reality could be contradictory?
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Undergrad About the repulsive force between two electrons
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Undergrad Can we physically realize unbound states?
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High School Can Hydrogen Atoms on Earth and the Moon Share Electrons?
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Undergrad Finding the Error in Computing Spherical Tensor of Rank 0 Using General Formula
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Undergrad The free particle in spherical coordinates
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High School What is the speed of electron movement in atoms at different temperatures?
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Undergrad Why is the lowest energy level close to the center?
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Undergrad Information in a light beam relative to the width of the beam?
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Graduate The probability of finding R out of N bosons in one half of a volume
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Undergrad Equal or larger/smaller versus larger/smaller in boundary conditions
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Undergrad Superposition of Phases: A Key Concept in Connecting QFT and Statistical Physics
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High School Exploiting radiocarbon dating for FTL communication
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High School Position of a particle and photons
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Undergrad Functional Derivatives: Overview & Tips
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High School The use of the dx in the quantum state vector integral
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High School How to teach beginners in quantum theory the POVM concept
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Undergrad How does the N signify the indistinguishability in the Gibbs Paradox?
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Undergrad Why are cumulants extensive and moments are not?
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Undergrad Quantum state variable for entangled system
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Undergrad Location of the quantum effect
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Undergrad Rigged Hilbert Space X: Eq (1) and (2)
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Undergrad Higgs Boson: What Gave Quarks & Leptons Mass?
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Undergrad Cosmic Rays could reveal if we're actually living in a simulation?
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Graduate Classical limit of the propagator
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Undergrad How Do Quantum Equations Predict Outcomes in Research?
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Undergrad Can Different Shapes of Slits Affect the Diffraction Pattern of Single Photons?
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