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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
Undergrad Where do the vibrational modes of molecules come from?
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Undergrad How is the Schrodinger equation related to the Heisenberg equation?
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Graduate Why Can't I Derive Eq.(7) from Phys.Lett.B Vol.755?
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Undergrad Is photon energy negative in a negative-index metamaterial?
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Undergrad Force carrier particle trajectories and warped spacetime
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Undergrad Do Two Photons in a Radiative Cascade Exhibit Directional Correlation?
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Undergrad The speed of forces, and applying relativity to force carriers
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Undergrad Callan-Symanzik equation for Effective Potential
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Undergrad Quantum Circuit Confusion On Time Evolution
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Undergrad Can the Lieb-Robinson Bound be Intuited from the Taylor Series of an Operator?
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High School What is the nature of de Broglie matter wave? Is it longitudian or transverse?
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Undergrad Interpreting Unitary Time Evolution
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Undergrad Generating Entangled Electron Pairs
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Undergrad A hurdle in quantum computing I've never been able to figure out
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Undergrad Quantum Mechanics vs Einstein: Light Btwn Black Holes, Double Slit Experiment
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Undergrad Is there a Crookes radiometer device with photoelectric effect?
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Undergrad Entanglement may reveal more about black holes? ...Even micro ones!
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Undergrad What is the limit in size that two particles/objects can be entangled?
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High School Is it possible to get the photoelectric effect in red color frequency?
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Undergrad Spectroscopy: vibronic and rotational transitions
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Undergrad Antisymmetrizing a Factorized Polynomial Vanishes?
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Undergrad Is there a generator of entangled photons with fixed polarization?
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Undergrad Clarification required for some equations in the formulation of ideal Bose gas
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Graduate Identity with Gamma matrices and four-vector contractions
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Undergrad Time dependence of operators in the Schrödinger picture
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Undergrad Help with a derivation from a paper (diatomic molecular potential)
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Undergrad Singlet Halperin State Construction
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Undergrad What is a False Vacuum? Understanding its Properties and Energy Differences
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Undergrad Hawking's latest contribution, is this an implication?
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High School What Distinguishes Wavefunction from Superposition in Photon Behavior?
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High School Does Wavelength Affect Uncertainty in Macroscopic Objects?
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Graduate Number of particles in canonical ensemble
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Undergrad JC Model in Python: Advice & Feedback Needed - Jon Poplett
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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 Photoelectric effect: Saturation voltage
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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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