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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 One does not “prove” the basic principles of Quantum Mechanics
Undergrad Determinism, realism, hidden variables
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Graduate What should hidden variables explain?
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Graduate Is SU(3) always contains SU(2) groups?
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Undergrad Assuming nonlocal realism: What message would signal convey?
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Undergrad Why did Dirac want a first-order equation?
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Undergrad How do we know the spin of a field?
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Undergrad Is CPT symmetry violated in beta decay?
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Graduate Can Relativity Explain Bell's Theorem Without Superluminal Communication?
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High School Probability of finding an electron
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Undergrad Is Canonical Momentum conserved?
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Undergrad Spatial interference fringes in Hong-Ou-Mandel
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High School Second Law and "Hidden Variables"
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High School Can Instruments Alter Wave Functions Across Global Distances?
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High School 2 questions about the photo electric effect
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Undergrad How Do Quantum Observables Influence State Collapse?
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Graduate Why must a polar vector parameterized by spinor be timelike?
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Undergrad Why is the Sky Blue? Understanding Born's Rule & Rayleigh Scattering
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High School Do Pilot Waves of Apple Resemble an Apple in Configuration Space?
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Undergrad Can Quantum Tunneling Cause Objects to Instantly Swap Places?
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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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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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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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Undergrad Time dependent perturbation theory
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Graduate Time dependence of field operators
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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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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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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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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 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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