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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)
High School What is the significance of the Planck length in physics?
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Undergrad What are the units for the Heisenberg Uncertainty Principle?
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Undergrad One by one photon delay in double slit experiment
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Undergrad Electron wavefunction as an overlap of orbitals
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Undergrad Why can you write the solution in this form?
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Undergrad Are quantum harmonic oscillators and radiation modes equal?
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Graduate What does a CPT transformation do to particle properties?
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Graduate Bright, dark soliton for cubic-quintic nonlinear Schrodinger
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High School How did we measure the mass of Quarks?
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Undergrad Wave-Particle Duality of Electrons
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High School Why only certain colors in emission spectrum are visible?
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Undergrad Does realism imply locality or vice versa?
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Undergrad What is an Eigenstate in Relation to Schrodinger Equation?
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Undergrad Shor Algorithm - Post measurement state
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High School Double Slit Experiment: Timing & Reflection Interference
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Undergrad Does reality really exist when not measured?
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Undergrad Cosmological constant estimation in QFT
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High School How does string theory fit with QFT?
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Undergrad Why not describing the radiatation of atom spectrum by TDSE
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Graduate Key problems in classical and quantum measurement
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Graduate A question about linear response and conductivity
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Undergrad Could Wormholes and Entanglement Be Connected?
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Graduate Classical intr. ang mom and quantum intr ang mom relation
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Graduate Challenges to QED from hyperfine measurements
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Undergrad Partially entangled(W), Maximally and disentangled states
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Undergrad Effect of Homog./Non-Homog. Magnetic Field in Heisenberg Spin System
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Undergrad What Mathematical Theories Are Essential for Understanding Quantum Physics?
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High School How decoherence destroys superpositions
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Undergrad Does quantum mechanics refute materialism?
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Undergrad Do Bell experiments disprove local realism?
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Undergrad Transition state of electrons in molecules
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Undergrad Factorising expectation values
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Undergrad Smallest possible orbit and velocity of a particle?
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Undergrad Build Your Own Quantum Entanglement Experiment?
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Undergrad Why probability current = 0 at infinity? Why must wavefunction be continuous?
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Undergrad What's the significance of the phase in a coherent state?
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Undergrad Differences in photons from protons vs photons from e-?
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Undergrad Is the Phase Velocity of a Massive Particle Representing Anything Physical?
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Undergrad Is Bell's Theorem Valid Despite Fundamental Theoretical Loopholes?
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Undergrad Is the Fermion number operator squared equal to itself?
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Graduate Haag's Theorem & Wightman Axioms: Solving Problems in QFT?
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High School Quantum tunneling - Questions about some pop-science claims
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High School Bell Non Locality, Quantum Non Locality, Weak Locality, CDP
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High School Question about a beam of light
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High School How can something be "Zero Dimensional?"
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Undergrad Inequality for the time evolution of an overlap
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Undergrad Neutron Stars: Flipping Up Quarks to Down Quarks
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Undergrad Particle antiparticle creation
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Undergrad A particle measured in a too high potential
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Undergrad Quantum "tunneling" of sorts and QFT....
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High School Double Slit Experiment: Detection around slit?
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Undergrad How to compute second-order variation of an action?
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Undergrad Electron jelly model and Hydrogen Atom
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Undergrad The Fundamental Nature of Angular Momentum in Quantum Mechanics
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Wigner-Eckart theorem and reduced matrix element
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Undergrad Identical Particle States in a Unidimensional Box
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Undergrad Heat energy: statistical mechanics vs atomic orbitals
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Graduate Help with proof of eq. 2.64 of Intro. to Quantum Mechanics
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Can Zeta ζ(½+it) be interpreted as a Wave function?
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Graduate Operators in Quantum Mechanics
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Undergrad Life on the Edge: is it still alive?
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Undergrad Electron capture and electron transitions.
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Undergrad Arithmetic Block in Shor Algorithm
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Graduate Operation of Hamiltonian roots on wave functions
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Undergrad Adding types of angular momenta
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Undergrad Compton effect: how can it take place?
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Undergrad Laser vs photodiodes and spectra
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High School Why does waveform exp[iwt] have negative kinetic energy?
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Undergrad Change in electron energy level and photon emission....
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Undergrad Pauli spin matrices and Eigen spinors
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Undergrad Bell's theorem and Superdeterminism
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Undergrad General Questions Related to Quantum Measurement
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Undergrad What Came First the Magnet or the Field?
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Undergrad Angular momentum operator commutation relation
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High School Is Inversion Symmetry Found in Nature or Technology?
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Undergrad Orbital angular momentum of light
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Undergrad Time independent Schrodinger equation results (1D)
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Undergrad Renormalisation and the Landau pole
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Undergrad Why does SU(2) have 3 parameters/generators like the SO(3)?
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Undergrad Do the vacuum states created by soft photons have vacuum flu
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Undergrad Wave-particle duality general question
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Undergrad What is the connection between classical uncertainty and quantum mechanics?
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Graduate Vacuum polarization at intermediate distances
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Undergrad Single-mode field quantization Hamiltonian
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Undergrad Maximally entangled state expression and generalization
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Undergrad Why do I get to a contradiction?
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High School How to change electron and proton charge
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Undergrad Conceptual question about spin state rotations
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Graduate Can a Point-Like Particle Defy the Uncertainty Principle?
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Physics Challenge by QuantumQuest #1
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Undergrad Information Theory and Entropy
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Graduate Peskin/Schroeder 4.77 page (about cross-sections)
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Graduate Non-Heisenberg Uncertainty Relations
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Graduate Double slit experiment wave interference?
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High School Double slit and randomly functioning measuring devices
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High School Energy of Gamma Ray Photon with Wavelength h
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Undergrad Klein-Gordon Operator: Creating Particles at Position x
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High School Trying to understand the double-slit experiment
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High School Probability Amplitude: Understanding Photons
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Undergrad How does observation affect reality
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