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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

Is the quantum wave function a real object or a mathematical tool?
High School What exactly are waves and how do they look?
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Undergrad Solve Eigenstates Doubt: Prof. Leonard Susskind's Quantum Mechanics
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Undergrad Free Particle: Time dependence of expectation values Paradox
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High School Do particles not only exist everywhere but also "everytime"?
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Undergrad Macro state of a measurement device and correlation
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Undergrad Electric and Magnetic Fields, Photons, Charges
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Graduate Where to start with path integral Monte Carlo?
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Undergrad Clarification of the postulates of QM
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Undergrad Expectation value of momentum for free particle
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Graduate Is Quantum Field Theory Still Relevant in Modern Physics?
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Undergrad Explaining Proca Lagrangian Integral Transformation
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Undergrad Quantum Computers: Room Temperature Superposition Explained
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Undergrad Electron wave energies different for +½ and -½ spin?
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Graduate Refutation of physics in _The Beginning of Infinity_?
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High School Derivation of g Factor and Missing Basic Steps in Calculation
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Undergrad Concrete contrast between local and nonlocal hidden variable
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Graduate Why is Spooky Action Necessary?
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Undergrad A question about two-slits experiment
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Undergrad Density of states from 3D to 2D
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Undergrad Momentum exchange during diffraction
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Undergrad Why is the 5 used in the axial Chiral current formulas?
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High School How does the double slit experiment prove super position?
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High School What are the potential alternatives to traditional teleportation and portals?
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Undergrad Time dependent perturbation theory
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Graduate Time dependence of field operators
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Graduate QED Hydrogen Atom: Formulating and Solving Problem
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Undergrad Is SLAC producing light "light with a wavelength of 32nm"?
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Undergrad Is Lambda in Bell's Ansatz a Parameter for Many-Worlds Interpretation?
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Undergrad Why are Hilbert spaces used in quantum mechanics?
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Undergrad New experimental support for pilot wave theory?
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Undergrad Is there a 'memory-effect' of measuring devices?
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Undergrad Why magnetic charge is pseudoscalar
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Undergrad "Asking photons where they have been" - Danan et al
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Undergrad Vacuum energy versus expansion of the Universe
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Undergrad Can identical particles be distinguishable?
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Undergrad Question on derivation/notation in a report
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Graduate How do we *know* the Schrodinger equation for H2+ can't be solved?
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Undergrad Time evolution of a wave function
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High School Can Entangled Particles Enable Instantaneous Communication?
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Graduate Change of the order of integration including Dirac delta
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Graduate Effect of time reversed hamiltonian acting on a state?
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High School Double Slit Experiment: Feynman's Lectures
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Graduate Radiation from a dielectric body
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Undergrad Photons being released from fire/heat
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Undergrad Representing Mixed States in Hilbert Space
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High School In need of cool experiments for show called 'Quantum'
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High School Questions about recent paper on Entangled Histories
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Graduate On the renormalization group flow
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Undergrad Problem in Deriving Rayleigh-Jeans Formula
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Undergrad Triplet State Symmetric Wavefunction
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High School Does Schrödinger's paradox work with multiple boxes?
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Undergrad Making a quantum computer do Shor's algorithm
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Graduate Wrong integration in Sakurai-Napolitano(and Fetter-Walecka)?
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Undergrad Spin 1/2 Particle in Isolated Box: Pure vs. Mixed States
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Graduate Clifford Algebra and generalizing Dirac equaution
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Undergrad Relation between quantum fluctuations and vacuum energy?
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Graduate Does true randomness exist in nature?
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High School Entangled photons thought experiment
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High School Nature of collapse / does collapse exist?
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Graduate Lay Question Regarding Compton Scattering
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Undergrad Quantum experiments and entropy question
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Undergrad Entanglement, can we predict the outcome?
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High School Does Quantum Physics really defy logic?
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Undergrad The energy term in Schroedinger equation
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Undergrad No Infinite speed on information yet?
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Graduate Image force in normal metal electrode tunneling
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High School Equivalence of entanglement and decoherence?
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Undergrad Energy levels generally invariant under fixed V, changing T
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Undergrad How do you derive Slater determinant from creation operator?
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Undergrad Could Planck have used different energy-frequency relation?
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Undergrad Does Relativity and Quantum Mechanics NEED to be reconcile?
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Undergrad Eigenvalue Problem: What Is It?
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Graduate What is the best Quantum Model to solve many body problems?
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Undergrad Expectation value in terms of density matrix
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High School Order of observations in Bell experiments
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Undergrad What does the act of observing do exactly?
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Graduate Using quantum-secured communication for data transfering
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High School What is the relationship between the Planck length and black holes?
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Graduate Heisenberg ferromagnet -- Spontaneous symmetry breaking
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Undergrad Understanding commutator relations
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Undergrad Why Can't We Fix the Gauge in the Magnetic Aharonov-Bohm Effect?
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Undergrad What is the size of neutrons in a neutron star?
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Undergrad Proof of unitarity of time evolution in Susskind's book
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Graduate Deutsch–Jozsa algorithm/Circuit Analysis
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Undergrad Lagrangian and Feynman diagrams
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High School Time reversibility in quantum mechanics
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High School Position of a harmonic oscillator
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Graduate Methods for finding properties of quantum dots?
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Undergrad QM - Ladder Operator QHO - factorization
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Graduate Electron shell further away from nucleus higher Energy lvl?
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High School Which component of light is a photon?
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Undergrad Can a Photon be Absorbed Without the Exact Energy Level?
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Undergrad Confused about the B-C-H equation
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Undergrad Can diffraction be explained by quantisation?
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Graduate Phase factors and Modulus Square?
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High School Two-Slit Experiment And Varying Electron Momentum
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Graduate Collapse and projection-valued measures
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Undergrad Schrödinger equation and interaction Hamiltonian
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Graduate Forbidden Transitions in the He-Ne Laser?
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Undergrad Properties of Photons: Orange vs. Green
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