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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 Valid local explanation of Bell violations? (Pegg et al., 1999; 2008)
Undergrad Question about the Which Way experiment & the detectors used
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High School Are there any empirical tests for the GRW extension of quantum mechanics?
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Undergrad Entropic effects of the Uncertainty Principle?
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Undergrad Young's Double Slit Experiment: Is it Possible?
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What Are the Dimensions of Hilbert Space Elements in Quantum Mechanics?
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Undergrad What is the spin-boson model for decoherence in a Penning trap?
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Undergrad Quantization of the electromagnetic field
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Graduate Perturbative Renormalization in Phi 4 Theory
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Undergrad Angular momentum of an atom within a rigid body in motion
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High School Peculiar View of Density Matrices: Is There a Problem?
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Graduate Loop Quantum gravity or String theory?
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Undergrad Frontiers in Physics had 2 papers quest. Bell's theorem, any othrs?
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Undergrad Does entanglement interfere with causality?
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Undergrad Physical interpretation of this coherent state
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Undergrad How should I think about decoherence?
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Undergrad Continuous Spectrum and Energy levels of Electrons (Energy Bands)
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High School Tardigrade is first multicellular organism to be quantum entangled
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Graduate Renormalization with hard cutoff of a loop diagram with single vertex
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High School Quantum Decoherence: What Happens to Other Outcomes?
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Undergrad Parity Selection Rules: I'm Confused
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Graduate Why is gauge invariance important in quantum mechanics?
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Graduate Degenerate Perturbation Theory: Correction to the eigenstates
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Graduate In QFT, what is the momentum of a created particle?
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Undergrad Are all (pure) states physically realizable?
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Undergrad Blue lights (LEDs) consume more power than red (and green)?
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Undergrad When does an even potential give both even and odd solutions to Schrodinger's Eqn?
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Undergrad A thought experiment concerning determinism in quantum mechanics
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Undergrad Interference of signal photons entangled with idlers
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Undergrad Virtual Photons: The Long-Distance Repulsion of Electrons
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Undergrad How are good quantum numbers related to perturbation theory?
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Undergrad A popular explanation of Bell's inequalities
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Undergrad Does putting a hydrogen atom in a box mix angular momentum states?
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High School Is the weak nuclear force attractive or repulsive or both?
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Undergrad What Insights Can the Feynman Diagram of γ+γ→γ+γ Provide?
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Undergrad Understanding the Raising and Lowering Operator: A Scientific Analysis
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Graduate Klein paradox in the massless case
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Undergrad How does QM explain that we see electrons circulating in a magnetic field?
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Undergrad Non-relativistic limit of Klein Gordon field
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Graduate Spontaneous and stimulated emission in Planck's radiation law
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High School Is matter a particular form of energy?
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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 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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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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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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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 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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