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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

Graduate Understanding Barandes' microscopic theory of causality
Graduate Ballentine on Diffraction Scattering
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Undergrad A very basic question about bra-kets
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Undergrad Parameter Integration of Bubble Integral
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Undergrad Velocity operator, its expression and eigenvalues
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Graduate Understanding time translations in Ballentine
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Undergrad How can multiple entangled Qubits be represented and visualized?
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Undergrad QFT vs GR Cosmological Constant
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Undergrad What are the units of the squeezing parameter?
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Undergrad (extended) Page-Wootters formalism
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Graduate Decoherence in the Heisenberg Picture
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High School What is a photon's structure composed of?
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High School Is the photon a gauge boson for neutrinos?
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High School Does DCQE show a shift between the two "which path" results?
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Graduate Heisenberg picture and Path integrals (Zee QFT)
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High School Are electrons in atoms always in eigenstates?
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Undergrad Experiment with gamers, random numbers and entanglement
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Undergrad Why is the minimum energy equal to the energy uncertainty?
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Undergrad Use of an Essentially Ubiquitous Equation
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High School The energy of a molecule has what sign?
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Undergrad What is an observable exactly?
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Undergrad Global evolution of a Bell pair of photons
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Undergrad Uncertainty Principle in QFT & Early Universe Conditions
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Undergrad Intuition for why linear algebra is needed in quantum physics
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Undergrad Laser and hair - scattering or destructive interference?
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Undergrad Are the proton and electron quantum entangled in the hydrogen atom?
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Graduate Can anyone give me the details of creating a cat state in Circuit QED?
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High School For what elements does Born–Oppenheimer approximation fail the most?
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Graduate Maxwell theory invariant under dual field strength tensor application
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Undergrad Two Entropy scenarios on a system
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Undergrad Can the Transverse Nature of a Wave from an Electron Gun be Observed?
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Undergrad Proving Behavior of Particle in Infinite Potential: Wave Function?
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High School Is superconductivity something usual or weird?
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Undergrad Is the mass of a photon stationary in space?
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High School Does Destructive Interference Affect Starlight in a Double Slit Experiment?
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Undergrad Is a photon emitted in a particular direction?
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Graduate The experiment of Kim et al. (1999) (with small modification)
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Graduate Purification of a Density Matrix
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Undergrad Feynman's QED; 36,000 revolutions per inch for red light.
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Undergrad Multiplying three vector operators
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Graduate Absorption and emission spectrum in quantum optics
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Undergrad Movement of protons between orbital bands in the nucleus
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Undergrad Time/space symmetry in Dirac Equation
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Undergrad How to derive Schrodinger's equation?
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Undergrad The left-right symmetry and forbidden triplet spin state
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Undergrad Fermi's golden rule: why delta function instead of density states?
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Graduate Hamiltonian V and T of a lattice?
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Graduate Physical explanation of time-correlation function and spectrum
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High School Spectral lines and superposition of states
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Graduate Jaynes-Cummings Hamiltonian: Where did the time dependence go?
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Graduate Did rotating polarizer show violations of Bell's Inequality?
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Graduate Gamma matrices and Gell-Mann's I - Y categorization
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Graduate Definition of the Wilson action on a lattice plaquette?
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Undergrad Planck’s constant: Why are atom vibration frequencies integers only?
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Undergrad QED/Quantum Mechanics: Probability or Spatial Function?
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Graduate References: continuum approximation of discrete sums?
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Undergrad Can I use the Schrodinger picture when the Hamiltonian is time-dependent?
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Graduate Time Ordering Operator for Fermions & Bosons
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High School Curious about this proposition for measuring for FTL
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Graduate Why Are the Peaks at Δ = 0 and Δ = ω_m Equally High?
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Undergrad What is the significance of recoupling in spin network theories?
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Undergrad Use of Gell-Mann matrices as the SU(3) basis for gluon states?
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Undergrad Axion Interaction: Weak & Strong Nuclear Forces
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Undergrad Query on use of prism in delayed choice quantum eraser experiment
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Undergrad Is the superposition of mesons (such as pion) a new particle?
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Undergrad How Is the Matrix V Related to Dirac Spinors and Tensor Products?
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High School Quantum field theory and wave particle duality
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Undergrad Single Photon States: Definition & Real-Life Applications
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Undergrad Evaluating the quark neutrino mixing matrix
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Graduate About the rigged Hilbert space in QM
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Undergrad Is a Photon Considered a Real Object?
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Graduate How are quantum optical experiments designed? ;)
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High School Collapse and unitary evolution
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High School What about if I apply HUP to myself?
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Undergrad Partial trace and the reduced density matrix
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Undergrad What is the probability of an electron emitting a photon?
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High School Can we all agree "consciousness" is not required to collapse wave function?
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Undergrad Direction of motion of particles with total spin under magnetic field
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High School How to evaluate whether a photon's polarization is in superposition?
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Undergrad Three Plus Anti-symmetric Particles
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High School Can an electron remain in an exited state forever with constant energy input?
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High School What happens when ethane absorbs UV light?
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Undergrad Shankar on constraints and free parameters for a particle in a box
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High School Why does anyone think gravity might collapse wave function?
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Undergrad Spinors and eigenspinors confusion
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Graduate Adiabatic theorem for a 3 level system
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High School Does the bomb experiment do a measurement?
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Undergrad How Do Quantum Numbers Influence Energy Levels in Atomic Systems?
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Undergrad Annoying detail in derivation of Compton scattering
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Undergrad Double-Slit Experiment: Does rate of photon emission matter?
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Undergrad Young's slit experiment with single photons
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Undergrad Are Planck's black body oscillators QHOs?
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High School Is there a resource that discusses wave collapse experiments?
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Graduate Gauge theory on a lattice: intertwiners, gauge potentials...
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High School The wave solution to the Photoelectric effect
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Graduate Proving Subadditivity of Entropy for Uncorrelated Systems in Pure States
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Undergrad What does decoherence have to do with phases?
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Undergrad Spectral Decomposition of the State Space
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Graduate Induced dipole moment (adiabatic) following the rotating E-field
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Undergrad Double Slit Experiment Mathematics
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Graduate Question about factoring the Klein-Gordon equation
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