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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 Basic commutator of angular momentum
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Graduate Time evolution of a state. (a missing t)
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Graduate Can massless states be used to build massive ones?
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Graduate Quantum harmonic oscillator tunneling puzzle
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Graduate How do you get from equation (2) to (3) in quantum mechanics?
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Graduate How directional is a single photon?
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Graduate Can we accurately measure the momentum of a particle?
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Graduate Why is the smallest energy transfer in quantum measurement uncontrollable?
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Graduate Does a neutron star act like a big particle?
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Graduate About the Uncertainty Principle
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Undergrad What is the relationship between atomic structure and molecular orbital theory?
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Graduate Quantum Mechanics: Probablities
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Graduate Negative Probability and Bell's Theorem
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Graduate Is Spin Related to Angular Momentum in Elementary Particles?
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Graduate Is Manipulating the Stefan-Boltzmann Law with Metamaterials Possible?
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Graduate Special relativity violation using entanglement
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Graduate Entanglement: Speed more than light
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Undergrad What photon or electron detector is used in double slit experiments?
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Graduate Uncertainty principle presentation
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Graduate How to Count Wick Contractions in Phi^3 Theory?
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Graduate Units of Fourier expanded field
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Graduate Raising operator for s in |s,m> states
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Graduate How does quantum mechanics explain the stability of macroobjects?
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Graduate Unintended observations, how do we do with it?
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Graduate Quantum Mechanics: Three Spin Observables
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Graduate Maxwells theory about electromagnetism
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Graduate Do low atomic numbers not obey Moseley's law?
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Graduate Mass dimension of coupling constant -- always an integer?
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Graduate It is said that we can not go lower than the planck limit
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Graduate Entanglement and Spin in Electron Interactions
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Graduate Vector representation of a Quantum State
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Undergrad Understanding Bragg's Law: The Relationship Between Wavelength & Atomic Order
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Graduate Time independent schrödinger equation query
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Graduate Expectation value of operator derivation
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Graduate Formulation of quantum mechanics
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Graduate Is the Interaction in the Canonical Formalism Lorentz Invariant?
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Graduate Spins on electrons versus photons
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Graduate Mathematical state of Path Integral?
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Graduate Curiosity about the wavefunction
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Graduate Separation of variables to solve Schrodinger equation
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Graduate When does the photon splits in 2 on the Two Slit Experiment?
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Graduate Double Slit Question: Can We Know From Which Slit?
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Undergrad Understanding the 'Observer Effect' in Relation to Reality and Mental Health
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Graduate Is the collapse of the particle wave function?
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Graduate Photoelectric effect without photons
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Graduate Relabeling spin or angular momentum operators
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Graduate Why Can't Quantum Numbers Include Half Integers?
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Graduate How Can We Manipulate 8 Quantum Combinations with Qubit Computing?
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Graduate Scaling of an eigenvalue with the coupling constant
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Graduate The ground state e- is the largest negative value, but why?
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Graduate Generalized Dirac Equation for All Fermions?
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Graduate Uncertainty principle and relativity
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Graduate Hawking Radiation: The Role of Electromagnetism in Black Hole Evaporation
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Graduate Beginner to QM with some questions
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Graduate Light like interval in wave function
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Graduate Diffraction wavelength of particles in moving frames?
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Graduate What is the relation between wave function on a photon
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Graduate Direction of a photon is fixed upon creation or observation?
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Graduate Vacuum energy-fundamental particle
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Graduate Generating function for the zeta function of the Hamiltonian
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Graduate Connection between Pauli XYZ and spatial XYZ
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Graduate The original postulates of quantum mechanics
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Graduate Probability of quantum tunneling?
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Graduate What are matrix elements in QFT?
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Graduate Energy Eigenstates inside a one-dimension box
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Graduate The Mysteries of Quantum Entanglement with Delayed Choice Question
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Graduate I'm having some trouble understanding bra-ket notation?
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Graduate Quantum Mechanics Exam Prep for PhDs
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Graduate What does the symbol sigma represent in electromagnetic calorimetry equations?
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Graduate Hermitian conjugate of a Hermitian Conjugate
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Graduate Momentum operator in curvilinear coordinates
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Graduate Rigged Hilbert Space Φ ⊂ H ⊂ Φ'
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Graduate Why two-state system = two-dimensional Hilbert space?
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Graduate How to find the energy level if a three state system
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Graduate On the huge hypothetical atom
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Graduate Is the Quotient of Two Operators AB-1 or B-1A?
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Graduate Wave function for a potential barrier
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Graduate What makes expectation values real?
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Graduate What experiment demonstrates Heisenberg's uncertainty principle?
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Graduate System of 2 particles: why is the wavefunction a product?
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Graduate Spin wavefunction for 2 electrons
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Graduate Coefficients in wave function for potential step
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Graduate How Does the Parity Operator Affect Spin States?
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Graduate Solution to Schroedinger Equation for a huge hypothetical
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Graduate Localization of states and elementary vs composite in QM
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Graduate Unitarity and locality on patgh integrals
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Graduate Schrödinger's cat explain color charge?
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Undergrad Bell's inequality for non-physicists
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Graduate Is Adding a Phase to the Wavefunction in Quantum Mechanics a Wrong Assumption?
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Graduate Is Everything Connected by Quantum Entanglement?
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Graduate Question regarding time independent perturbation theory
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Graduate Cooling and (or?) heating ion trap experiments
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Graduate Direct Product of Two Spin-Up Vectors: What Is It?
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Graduate Confusion About Quantum Uncertainty
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Graduate What is the polarization of a virtual photon
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Graduate How to devise an experiment that violates uncertainty principle
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Graduate Quantum Leap: Electrons and Instant Movement
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Graduate Passing a black hole from double slit experiment setup
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Graduate Large n-pt functions renormalized by small n-pt functions?
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Graduate Can Quantum Decoherence Math Explain Color Charge States of Quarks?
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