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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

A question about quantum entanglement
Graduate Where does the energy come from?
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Graduate Can Free Fundamental Particles Absorb Photons?
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Graduate Double slit experiment with electrons
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Graduate What is the true nature of an atom and how can we visualize it?
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Graduate RG equation and invariance of the vertex function under scaling(Ryder)
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Graduate Quantum Mechanical Operators - A Question Or Two
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Graduate Understanding the Landau Pole Phenomenon in Quantum Field Theory
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Graduate Why is weak force short range action?
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Graduate Why don't quantum fluctuations cause us to fall through the floor?
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Graduate Tensor coupling and 6j/9j symbols
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Graduate What is the nature of sound from the quantum perspective?
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Winning Nobel Prize: Friend's Experiment to Prove Electron Not a Particle
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Graduate Modern Quantum Mechanics: J.J. Sakurai's eq. (1.7.31) Explained
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Graduate Forming the most general two qubit entangled state & parametrizing it.
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Graduate Antiparticles identical in qft
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Graduate Double-slit interference pattern measurement with entangled photons
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Undergrad Does a photon have energy if its mass is 0?
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Graduate Transmission and Reflection on a potential step
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Graduate What is the Connection Between Antiparticles and Vacuum in Physics?
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Graduate Derivation of Spin-orbit Coupling
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Graduate Para / Ortho Hydrogen (H2) Spins
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Graduate What is the difference between anti-particle & exotic matter
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Graduate Why wouldn't this experiment allow superluminal communication?
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Graduate Sakurai : Approximations in the construction of Quantum theory
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Graduate Is single particle interference explainable via entanglement?
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Graduate Unraveling the Mysteries of Intensity vs Wavelength
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Graduate Complete set of stationary solutions
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Graduate Product of three gamma matrices
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Graduate Polarization of photon-Peskin and Schroeder
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Undergrad Two general questions about wave functions
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Graduate Harmonic Oscillator: Energy Explained
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High School Uncertanity Principle in Macrocosm
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Graduate Rotation operator quantum mechanics
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Graduate Counterterms Feynman Rules Derivation
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Graduate Quantum Eraser Interference Patterns
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Graduate Wigners Theorem And Linerarity
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Graduate Nuclear charge and atomic orbitals
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Graduate Virtual photons and long range force carrier
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Graduate What does local causality mean?
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Graduate Heisenburgs Uncertainty Principle in a narrow tube?
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Graduate Is CPT-Invariance Sufficient for Lorentz Covariance and Locality?
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Graduate Planck's radiation law: Act of desperation
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Graduate Quantum mechanics probability
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Graduate Representation of Lorentz group and spinors (in Peskin page 38)
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Graduate What is the quantum mechanics behind blackbody radiation?
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Graduate What is the quantum of an electromagnetic wave?
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Graduate Two qubit state multiplication
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Graduate Wigner function of two orthogonal states: quantum harmonic oscillator
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Graduate How Can Intuitive Approaches Enhance Quantum Operator Derivation?
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Graduate Do Photons Actually Move at the Speed of Light?
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Graduate Seeing colors: photons vs waves
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Graduate Partial wave analysis - incoming/outgoing?
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Undergrad Direction of reflected/refracted light
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Graduate Is a Quantum Trapped Superconductor Inside a Vacuum the Ideal Simple Machine?
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Graduate Path integral and gaussian integral
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Graduate Separation of variables to solve Schrodinger equations
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Graduate Variational method, is the wavefunction the best for all
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Undergrad Photon Wavelength: Particle or Wave?
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Graduate Physical mass in a quantum field theory
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Graduate Questioning Neil Turok's Claim on Quantum Information
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Graduate Hamiltonian eigenstate problem
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Graduate Does mass bend the Higgs field as well?
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High School Double Slit & Compton: Understanding the Connection
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Graduate How to find the ground state of He atom
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Graduate Does QFT respect conservation of angular momentum?
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Graduate What is the meaning of Wave function?
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Undergrad Calculating Uncertainty in Position for Scientists
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Graduate Is Uncertainty in Velocity Equal to the Velocity Itself?
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Graduate How photons and static em feilds work
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Graduate Why electrons can have only 2 spin orientations?
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Graduate Imaginary momentum and virtual particles
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Undergrad Can Photons Have Mass? Debate & Answer
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Graduate Excitation of electrons in atoms
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Graduate Why are QM wave functions complex?
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High School Can someone explain degeneracy pressure in simple terms?
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Graduate Should the speed of light be slightly uncertain?
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Graduate Is there a connection between spinors and isotropic vectors in QM and QFT?
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Graduate Paraparticles and Parastatistics
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Graduate When is classical mechanics valid for describing motion of atoms?
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Graduate 9j symbol expansion in 6j symbols
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Graduate Is [x,p]=i quantum mechanical?
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Graduate Mistake in proof regarding degeneracy property
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Graduate Energy of interacting particle and time evolution of p(x)
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Graduate Why does a deuteron nucleus have spin 1? Hydrogen spin 1/2?
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Graduate What is the quantum mechanics descriptions for a plasma radiation
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Graduate Quantum entanglement (information transmitted )
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Graduate Photon interacting with 1D-boundary
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Graduate Selection rules for atomic transitions
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Graduate Is the Transmission Probability of a Vertically Polarized Photon Really 1.0?
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High School How does visible light carry energy through reflection?
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Graduate Solutions of the schrödinger eq. for a potential step
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Graduate Schrodinger equation subjected to general potential
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Graduate Why is the concept of a one dimensional box used?
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Graduate Is There a Metric Tensor in Hilbert Space That Transforms Vectors to Duals?
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Graduate Changing variables in the Schrodinger equation
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Graduate Question about noether's theorem
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Graduate Dark state & schrödinger equation
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Graduate What happens when we measure spin of a fermion?
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Graduate How does a collider know both the energy and position of the particle?
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Graduate Are macroscopic objects self-collapsing ?
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