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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 Can light meaningfully travel an infinite distance?
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Graduate Max Fidelity at $$F=|\langle\psi|\phi\rangle|^2$$
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Undergrad A quasi-analogy of wave-particle duality?
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Graduate Does the quantum space of states have countable or uncountable basis?
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Graduate What are the methods for calculating quantum phase transition?
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Undergrad Is time continuous or discrete in quantum physics?
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Undergrad Question about Grover's algorithm
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Undergrad Why can't classical models explain quantum entanglement?
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Graduate Is wave-matter duality a proven theory?
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Graduate Quantum linear code/ Dual Code (CSS) proof
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Undergrad Quantum spin, wavelength and frequency
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Undergrad Math of Electron Double Slit Experiment
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High School Bell Test Configuration Question
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Graduate What Does Constant Fidelity in Quantum States Imply?
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Undergrad ##H=i\hbar\frac{d}{dt}## is weird
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Undergrad Parity Operator in 2D: Understanding Transformation & Spin
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Undergrad Do measurements modify angular momentum and energy?
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High School Copenhagen Interpretation and collapse moment
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Undergrad Is the Vacuum Truly Empty or Just an Illusion?
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Graduate Fidelity for quantum state at t=0
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Graduate Is the Higgs Field Responsible for Microscopic Gravitational Effects?
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Undergrad Explaining Quantum States: Global Phase
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Undergrad Derivatives for a density operator
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High School Planck Length 1 Detector? Emitter?
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Graduate Are these papers on Quantum Electrodynamics true?
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Undergrad Question about the Feynmann-Stuckelberg interpretation
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Undergrad Schrödinger wave function: How to use it to get 3-D atomic orbitals?
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Undergrad What types of forces are described in the standard minimal QED Lagrangian?
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High School Is quantum coherence a random event?
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High School What Happens When a Photon’s Superposition Encounters a Black Hole?
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Undergrad Blackbody radiation in quantum mechanics
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Undergrad What are the Misconceptions Surrounding Virtual Particles?
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Undergrad Decoherence and direction of causality
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Graduate Simple S matrix example in Coleman's lectures on QFT
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Graduate Is there still a collapse problem after decoherence?
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Graduate Anharmonic oscillators with closed-form solutions
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Graduate Fidelity between initial and final states
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Undergrad Nature of Collision in Compton Scattering
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Undergrad What is the origin of translational motion?
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High School Question re photons/EM waves and the double slit experiment
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Undergrad The Meaning of Basis States in Quantum Mechanics
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Graduate Could QM Arise From Wilson's Ideas
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Graduate Knill-Laflamme condition Shors code
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Undergrad Are density matrices part of a real vector space?
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Undergrad Momentum in electromagnetic waves
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Undergrad Feynman's description of the quantum behaviour of an ammonia molecule
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High School Do eigenstate probabilities change with time?
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High School Could Spontaneous symmetry breaking cause momentum change in an atom?
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Undergrad Vacuum energy and Energy conservation
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High School Is quantum superposition involved in the Stern-Gerlach experiment?
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Undergrad Determining Momentum from Wavefunction
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High School How does quantum superposition really work?
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Undergrad Uncertainty principle equation for virtual particles
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Undergrad What is the quantum spin of a single electron in an (atomic) orbital?
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Graduate How to derive the Momentum and Energy Operators from first principles?
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Undergrad Developing Quantum Expressions using QUBO
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Undergrad Why Does Molecular Potential Energy Curve Have That Specific Shape?
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Undergrad How to recalculate Berry phase dipole moments (jumps over time)?
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Undergrad Dirac equation in the hydrogen atom
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Undergrad Observables on the "3 polarizers experiment"
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High School Double Double Slit Experiment -- Question about Variations
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Graduate Connection between QFT renormalization and field regularization?
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Undergrad Schrodinger Cat states in terms of Displacement Operator
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Graduate Time evolution of coherent state with vacuum
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High School Black Holes & Stars: Quantum Entanglement Possibility?
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Graduate Trace of Numerator in QED vacuum polarization
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Graduate What's the meaning of mean photon number?
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Graduate Understanding how quantum annealing solves QUBO problems
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Undergrad Discussion about quantum mechanics and spacetime
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Undergrad How Do We Model Wave Function Collapse After Measuring Particle Location?
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Undergrad Common features of set theory and wave functions?
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Undergrad Perturbation theory with two parameters?
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Undergrad Commutation of Beam splitter operator with Displacement operator
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Undergrad What does it really mean that photons are quanta of light?
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Graduate Infinities in QFT (and physics in general)
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Graduate Cat state acting on given Hamiltonian
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Graduate Discover the Fascinating Evolution of Cat States in Our Comprehensive Guide
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Graduate What is the legacy of Sidney Coleman?
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Undergrad Observing a double-slit experiment
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Undergrad How big is a photon - Interesting video
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High School Why is there now evidence of a lag time in the photoelectric effect?
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Undergrad Software for optical simulation with interference
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Undergrad Spin spin coupling problem an electron/positron system
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Graduate Derivation of recovery channel for bit flip error
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Graduate Relationship between Larmor precession and energy eigenstates
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Graduate How Does One Calculate the Time Evolution of a Photon in a Vacuum State?
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Undergrad Question about the Propagator (as defined in Ballentine)
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Graduate Understanding Local and Nonlocal Operators in Quantum Field Theory
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Graduate I am looking for an example of a Fredholm module
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Undergrad Differentiated Sakharov Equation for Vacuum Fluctuations
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High School Does Schrödinger's Cat Know Its Own Fate?
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High School A layman's question about entanglement
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Undergrad Gauge Theory and Fiber Bundles
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Undergrad Measuring Photon Intrinsic Nature: Is Interference a Factor?
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Undergrad Proving the Schrodinger Equation
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Undergrad Rayleigh scattering VS Raman scattering
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Undergrad Entangled particles in black hole decay?
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Undergrad [Quantum Computing] Quantum Parallelism State Calculation
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Graduate Bootstrapping quantum Yang-Mills with concrete axioms
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Undergrad Output of down converted beam not proportional to input beam power?
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