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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)
Graduate Massive gauge bosons in QFT in/out states
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Graduate Does Quantum Mechanics Embrace Symmetry and Causality?
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Undergrad The Mystery of Atomic Decay: Is it Truly Random or is There More at Play?
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Undergrad Can a free particle have a definite energy in quantum mechanics?
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Undergrad Transition probability density between two transmitted states
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Undergrad Doesn't the superposition in energy violate the conservation of energy
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Graduate Explicit form of annihilation and creation operators for Dirac field
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Undergrad Inadequate proof of Bloch's theorem?
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Undergrad Is an atomic electron transition a phase transition?
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High School Entanglement & Wave Function Collapse
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Undergrad When is a system coherent or decoherent?
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Undergrad Confusion with superposition of states
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Graduate How Does Quantum Field Theory Preserve Causality?
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Undergrad Equation for levitation forces between the magnets and superconductor
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Graduate Understanding time invariant of EM
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Undergrad Force on Photon? Interaction with Matter Explained
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Undergrad Spooky action at a distance by electrons?
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Undergrad How does the von Neumann equation relate to Schrödinger's equation?
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Undergrad Why we need completeness of eigenfuntions for QM to be internally consistent?
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High School Is Born's Rule Commutative in Quantum State Measurements?
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Undergrad Confusion about factoring in quantum computation
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Undergrad Preferred orientation of a nitrogen molecule in space?
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High School Questions on QFT & QM: Is QM or QFT Absolute Time?
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Undergrad Photon states and interference in an Interferometer
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Undergrad Would distinguishable particles experience bonding?
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Undergrad Clebsch-Gordan coefficients and their sign
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Undergrad Wave function when there is coupling between spin and position
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High School Quarks and Antiquarks in a baryon
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High School Can a Quark Tunnel Out of a Proton?
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Undergrad How to be sure we have found all magnetic quantum numbers?
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Undergrad How to choose the way an excited electron loses energy?
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Undergrad Is the Born Rule Derivable from Other Postulates in Quantum Mechanics?
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Undergrad Spherical Symmetry & Electron Spin: An Exploration
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Undergrad Excited electrons' behaviour, how do they work?
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Undergrad Why does an electron orbital have a preferred z axis?
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High School Is a Universe Without Parallel Universes Possible in the Multiverse Theory?
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Undergrad Double Slit Experiment question
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Graduate How can we derive the results that we know about QM from QED?
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High School IB Physics Extended Essay - Quantum Levitation
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Undergrad How electrons absorb or emit photons
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Undergrad Does a Gaussian wave packet remain Gaussian?
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Graduate QED Bound States: Weinberg's Explanation & Breakdown
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Undergrad Electric dipole moment of the nucleus of an atom
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Undergrad Are time and space continuous or discrete?
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Undergrad Voltage between electron and proton in ground state hydrogen atom?
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High School What Are Quantum Fields and How Do They Relate to Particles?
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High School I formulating a research question for my Extended Essay
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High School Confusion over spin measurements
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Undergrad What is a Photon? - Physics Basics Explained
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Graduate Is quantum theory a microscopic theory?
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High School Speed of light with quantum path integrals
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Graduate Representation of Super-Quantum probability
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Undergrad Wave-particle duality revisited: Neither wave nor particle
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High School Quantum microphone and phonons
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High School The Human Eye as a Detector in Double-Slit Experiment
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Undergrad God plays dice, stochastically and deterministically.
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High School QFT & QM Questions (about time, locality, gravity, etc.)
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Undergrad Can you locally tell that a measurement you made was entangled?
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Undergrad Multiplying two function operators
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Undergrad Standard deviation of the Hamiltonian?
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Graduate Matrix transmission coefficient
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Undergrad Is the Quantum State Holographic?
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Undergrad Does science disprove this person's theory?
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Undergrad Dirac's Gamma Matrices: What Are They & Do They Have Many Forms?
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Undergrad Why observables are represented as operators in QM?
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Undergrad Is the Measurement Apparatus made up partly of electrons? Perhaps not.
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High School What am I missing here? (QFT: ##e^- - p## scattering)
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Undergrad Banning the terms "realist" & "anti-realist" -- do you agree?
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Undergrad What is the Meaning of the Schrödinger Equation?
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Undergrad Isn't the local no-hidden-variable theory inconsistent with standard QM?
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Undergrad Problem with the idea of identical particles in QM
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Undergrad Where to publicise some notes on quantum mechanics
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Undergrad Interacting fields in QFT and minimum excitations....
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Undergrad Trying to understand entanglement and "dense coding"
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What is the difference between quantum computers and quantum accelerators?
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Graduate How can infrared divergences in the fermion propagator be cured in QED?
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Undergrad Understanding Operators in Matrix Mechanics
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Undergrad Spot Electron: Unveiling the Wave-Function Collapse
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Graduate What does the first ever photo of quantum entanglement look like?
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Undergrad Momentum operator in quantum mechanics
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Undergrad Trying to understand electron orbitals
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Graduate Is time irrelevant in quantum mechanics?
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Undergrad What does U\dagger H U represent?
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High School FTL Communication: Closing Bell Test Loopholes for Quantum Integrity
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Undergrad Let's talk about the classical limit of QM
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Undergrad How to use a quantum bit, or several
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Undergrad Solving for hbar: Momentum and Wave Vector Relationship
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Undergrad Can ambiguity in the word "measurement" allow contradictions in QM?
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Undergrad Finding Normalization Constants for a Set of Energy Eigenstates
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Graduate Tensor and vector product for Quantum
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Undergrad Replace a Toffoli gate with an equivalent circuit
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High School Multiple Histories theory by Richard Feynman
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High School Can quantum entangled particles be split and sent into a black hole
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Undergrad Relativistic Quantum Mechanics & Localized Particles
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Graduate How does a polarising filter work?
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Graduate Correlation function of a Klein-Gordon field
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Undergrad What Is the Mystery Behind Particle Spin and Bell's Inequality?
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Undergrad Young physicist in seek of guidance
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Undergrad Viewing the wave properties of a macroscopic object
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Undergrad When exactly did 'quantum fluctuations' in the early universe occur?
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