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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 Entanglement, Mixed or Pure State?
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Undergrad Reversing a series of polarizers
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Undergrad Cyclic rotation of the cross product involving derivation
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High School What is actually spinning in quantum spin?
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Undergrad A Question on Spinors in a High school textbook
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Undergrad Gravity & Time Dilation: Quantum Level Questions
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High School Is the highest frequency possible the inverse of Planck time?
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Graduate Mixed versus Pure Quantum States for the Singlet
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Graduate Complete characterization of local monomials
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Undergrad Macroscopic quantum entanglement?
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Graduate Active and Passive Transformations Confusion
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High School Two questions about Black body radiation
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Undergrad Physical proof of a simulation?
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Undergrad Quantum Spin - If It’s Not Spinning, What Is It Doing?
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Undergrad Notation of the approximation in quantum phase estimation algorithm
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High School Q - Double slit experiment, delayed slit selection observation
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Graduate Orthogonality of variations in Faddev-Popov method for path integral
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Graduate Weyl Fermion in an infinite well
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Undergrad Significance of double slit experiment?
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Graduate Does quantizing metric fields mean quantum gravity?
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Undergrad Derivation of Schrodinger equation (chicken and egg problem?)
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Undergrad How indistinguishable are photons?
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Undergrad Can a static EM field consist of photons?
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Undergrad Interferences (with diagonal density matrix)
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Undergrad How to Find the Berry Phase in Slowly Varying Systems
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Undergrad Why we know average speed of single photon equal speed of EM wave?
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High School Polarization of a single photon
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Graduate What is the achievable accuracy of neutrino speed measurement?
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Undergrad Participatory Anthropic Principle
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High School Can particles appear from "actual" nothing including no space?
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Undergrad Is there a multicolor single photon?
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Undergrad Are All Electrons Truly Identical?
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Undergrad How does phase-sensitive detection eliminate noise?
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High School Does Quantum Entanglement Suggest a Fake Universe?
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Undergrad Quantum phase estimation - Question regarding rewriting the state
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Graduate Solving Schrödinger's Equation with a Smooth Potential Wall: A Detailed Guide
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Graduate Pauli Villars for Quadratic Divergences
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High School Quantum entanglement and communications
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Undergrad Understanding spinor transformation law
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Undergrad Is this correct? Casimir Effect
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Undergrad Stern-Gerlach experiment superposition vs mixed state
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Graduate HHL quantum algorithm and the phase estimation
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Graduate What are the quantum numbers used to label helium atom eigenfunctions?
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Graduate Right Hand Rule in NMR and EPR?
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Undergrad Online Experiment: Compton Scattering
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Undergrad Why are terms like "deterministic" rarely used in Bell context
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Undergrad Plasmonic - Dielectric function
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Undergrad When does quantum entanglement occur?
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Undergrad Measurement of a qubit in the computational basis - Phase estimation
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Undergrad Writing the wave function solutions for a particle in a 2-D box
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Undergrad Is Information Really Preserved in Quantum Systems?
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Graduate Quantum Field theory vs. many-body Quantum Mechanics
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High School Is it really possible to slap my hand through a table?
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High School Boundary between a particle in two energy states
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High School Unraveling the Mystery: Interactions and Properties of Quantum Objects
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Undergrad Can We Always Determine Eigenfunctions for an Asymmetric Top?
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Graduate The experiment for testing the CHSH inequalities
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Undergrad What is the difference between first and second-order vacuum polarization?
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High School Double slit -- simple question
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Undergrad The distracted experimentalist's problem
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Undergrad Is the Fermi-Dirac distribution equal to zero at the state of highest energy?
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Undergrad CHSH inequality : renaming and absolute values
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Undergrad Does entanglement of photons really facilitate telepathy?
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Undergrad How Do Kochen-Specker Theorem and Contextuality Relate to Financial Markets?
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Undergrad The atomic Coulomb potential extends to infinity?
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Undergrad Defining electromagnetic waves
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Undergrad How do photons transfer energy?
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Undergrad Superluminal Quantum tunneling without FTL messaging
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Undergrad What do the psi_3 and psi_4 components of the Dirac equation represent?
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High School Particles Within Atoms: Uncovering the Mystery of Forces and Vacuum
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High School Can Entangled Particles Stay Undetermined Despite Decoherence During Separation?
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High School Could a parallel universe exist?
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Undergrad Any other good sources on the Lamb shift other than Wikipedia?
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Undergrad What is the connection between the Lamb Shift and the g factor?
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High School Why do superpositions occur? What causes them to occur?
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Undergrad Are commuting observables necessary but not sufficient for causality?
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Graduate Hamiltonian in second quantization
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Undergrad Solving Schrodinger's eqn using ladder operators for potential V
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Undergrad The definition of the spectra in quantum mechanics
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Undergrad What gives an optimum value for electron energy to ionise atom?
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Undergrad Does anyone have a collection of the Dirac Equations?
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Undergrad Can Dirac Delta Functional Observables Be Regarded as True Quantum Observables?
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Undergrad What is the Complex Conjugate of a Hermitian Integral in QM?
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Undergrad Gauge in the Aharonov Bohm effect
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Undergrad What is the Definition of Quantum Physics?
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High School Objective-collapse theory, collapse for large objects
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Graduate Gauge invariance confusions: symmetry vs redundancy, active vs passive
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Undergrad Understanding Bra Ket Correspondence and Proving (1.8) Transformation
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Graduate What is the point of geometric quantization?
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Graduate Can Quantum Mechanics be postulated to exclude humans?
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Undergrad What is unique about the bra in Dirac bra-ket notation?
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Undergrad Physical interpretation of phase in solutions to Schrodinger's Eqn?
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Undergrad Bra Ket is equivalent to inner product always?
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Graduate QFT with vanishing vacuum expectation value and perturbation theory
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Undergrad Weak measurement and the measurement problem
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High School Why exactly do Virtual Particles not violate Conservation of energy?
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Graduate Interaction between matter and antimatter in Dirac equation
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Undergrad Superposition Angle Range in 2-Slit Experiment
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Graduate Why we can perform normal ordering?
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High School Is an experiment planned to discern determinism and randomness in QM
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