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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 Question about discussions around quantum interpretations
Undergrad Emission Spectrum & Energy: Exciting Hydrogen Vapor
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Undergrad The Hamiltonian elements in Anderson dimer
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Undergrad Two-photon Stimulated Raman Transitions
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Graduate What is this unitary invariant?
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Undergrad How Does a Photon Interfere in an Experiment with Less Than One Photon?
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High School Device that detects if someone is looking at the device?
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Undergrad Instability of hydrogen ground state if the time-reversal operator is unitary
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High School Examples of less popular pairs of physical properties with uncertainty (HUP)
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Graduate Real vs complex spherical harmonics for hexagonal symmetry
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Undergrad Hossenfelder: Delayed Choice Quantum Eraser, Debunked?
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Undergrad Can Operators Have Multiple Partial Derivatives in Quantum Mechanics?
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Undergrad Fermi energy for a Fermion gas with a multiplicity function ##g_n##
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Undergrad Physical meaning of two independent, non-interacting parts
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Undergrad What do you need to establish that spin is conserved?
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Graduate Relativistically invariant 2-body phase space integral
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Undergrad Spin operator and spin quantum number give different values, why?
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Graduate What is the biggest problem to be solved in Quantum Physics in 2023?
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High School Bell inequality test without polarisation?
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Undergrad Questions about Grover's algorithm for quantum searches
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Graduate What is a spatial wavefunction in QFT?
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Undergrad Average magnetic moment of atom in magnetic field ##B##
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Undergrad Quantum decoherence and the emergence of space/time and gravity
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Graduate A question about entanglement swapping
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Undergrad Is the Archimedes Experiment a groundbreaking test of the Casimir Effect?
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Undergrad Quantum Mechanics as a Probabilistic forecast of reality
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Undergrad Generation of polarization-squeezed beams
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Graduate Do Time-ordering and Time Integrals commute? Peskin(4.22)(4.31)(4.44)
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Undergrad Hidden phase in polarization tests of Bell's inequality?
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Undergrad Are Nicolas Gisin's Intuitionist Mathematics Theories Compatible with SR and GR?
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Undergrad Biphoton: Existence of layered or multiple entanglements
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Undergrad Understanding Scattered Radiation in Photon Beams
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Undergrad Understanding the Equations of Motion for the Dirac Lagrangian
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Undergrad Showing that operators follow SU(2) algebra
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Undergrad Mass of Electron & Flipping Frequency: Leonard Susskind Explains
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Undergrad The Potential of Back-to-Back Photons: an Experiment
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Undergrad Noise Proportional to Square Root of Illumination: Need Formula Help
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Undergrad Do black holes destroy quantum states?
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Graduate How can gauge fields be associated with real particles?
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Undergrad Quantum Entanglement and Parallel Worlds/Existence
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Undergrad Principles of Quantum Mechanics - Hans C. Ohanian - 0137127952
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Graduate Bound states of an electron trapped in a dipole field
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High School Entanglement inside a black hole
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Undergrad ##Tr([Q,P])## and Ballentine Problem 6.3
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High School Are Photons Real? New Study Challenges Assumptions
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High School What exactly is spin? Does the standard model work without spin?
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High School Quantum Computers and their special properties?
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Graduate Why Unitary Evolution? QM Justification Ideas
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Graduate Main Theorem of Renormalization, but in physicist-speak
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Undergrad Uncovering the Mystery of Kallen-Lehmann Spectral Representation
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Undergrad Dirac Notation for Operators: Ambiguity in Expectation Values?
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High School The Mystery of Excited Electrons: Are They Moving Away from the Nucleus?
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Undergrad Ways of measuring open quantum systems
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Graduate Can entanglement be detected in a single Bell pair?
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Undergrad Necessity of the field viewpoint
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Undergrad Noether currents for a complex scalar field and a Fermion field
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Undergrad How to add time variation to a Schrodinger operator?
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Undergrad Propagator of massless Weyl field
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Graduate How to measure the two-photon detuning in 3-level system?
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Undergrad Translating the harmonic oscillator
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High School Quantum Entanglement & Hybridization
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Undergrad Finding Eigenvectors of 2-state system
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Graduate Numerical method to Lippman-Schwinger equation
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High School Atom energy band formation and electron allotment
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Undergrad Rewriting of Gibbs Free Energy in Peksin (Equations 13.35/13.36)
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Undergrad Classic 'Double-Slit' Experiment Using Time Instead of Space
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High School Quantum entanglement and simultaneity
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High School Is it possible to measure both position and momentum simultaneously?
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Undergrad Does a particle's mass fluctuate.
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Undergrad Symmetry and two electron wave function
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Graduate Wave-packet in configuration space
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Graduate What’s the meaning of decay rate in optical Bloch equations?
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Graduate Relation between the density matrix and the annihilation operator
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Undergrad Fourier Transform of Photon Emission Hamiltonian
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Undergrad Identity involving exponential of operators
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Undergrad Superposition of different spins
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Undergrad Why is there an additional prefactor in equation (12.52) of Peskin's QFT book?
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Undergrad Where is the mass of a particle located?
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Undergrad Weakly interacting electrons in an atom
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Undergrad Black Hole Information path described in new article
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Undergrad Non-Commutation Property and its Relation to the Real World
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High School Quantum entanglement and hidden variables
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High School What do these wavenumbers correspond to in Raman spectroscopy?
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Undergrad Ballentine Equation 5.13 on conservation of momentum
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Graduate Von Neumann's uniqueness theorem (CCR representations)
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Undergrad Does an electron have a quantum phase frequency?
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Undergrad Prefactor in Canonical Quantization of Scalar Field
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Undergrad Momentum eigenfunctions in an infinite well
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High School Does anything happen in the quantum world?
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Graduate Quantum analog of Boltzmann entropy?
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High School How to show that particle spin includes angular momentum?
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Graduate Momentum operator -- Why do we use the plane wave solution?
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Undergrad QED Renormalization Counterterm Confusion
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High School What are the energy eigenvalues of a harmonic oscillator?
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Undergrad Interaction of EM radiation with Glass
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Undergrad Mach-Zehnder interferometer, but with an entangled beam?
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Undergrad What is the relation between the Dirac equation and QED?
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Undergrad What happens when circular polarization meets a diagonal polarizer?
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Undergrad Repeated measurements on a quantum system interacting with other quantum systems
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Graduate How to derive Quantum Mechanics in curved physical space?
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High School Is a Spin 2 Particle the Key to Understanding Gravitation in Quantum Mechanics?
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