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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 On computing quantum waves exactly from classical action
High School Spacetime, quantum field, and aether
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Graduate Off-Forward quark-quark amplitude in momentum space
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Undergrad Brownian motion and continuity
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Undergrad What were the real results of the photoelectric effect experiment?
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Graduate Expectation value in Heisenberg picture: creation and annihilation
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High School Question about quantum superposition
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Undergrad The quantum state of the Universe
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Undergrad The general structure of relativistic QFTs
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Undergrad Solving a Particle on the Surface of a Sphere: Obtaining Eigenvalues
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Undergrad Can the Helium atom be solved by other methods?
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Undergrad Electron Indistinguishability and Repulsion
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High School Wave-particle duality of atoms and molecules
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Undergrad Strange Hamiltonian of two particles on the surface of a sphere
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Undergrad Wavefunction of ionized hydrogen electron
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Undergrad Do Bell Experiments Show Local Overlap of Wave Functions Before Measurement?
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Undergrad Expansion of Space: Questions on How the Universe Works
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Undergrad Boltzmann brains and limitless energy....
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Undergrad Acceleration in QFT: Fundamentals, Causes, Quantization
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Graduate The Generalized Capabilities of the Standard Model Lagrangian?
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High School Copenhagen Interpretation - Superposition - confirmed?
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Undergrad Wavefunction properties tunneling effect
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Undergrad Geiger counters and measurement
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Undergrad Logical implication vs physical causality
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Undergrad Derive the probability of spin at arbitrary angle is cos( )
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Graduate Secular Approximation of Dipole-Dipole Hamiltonian
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Undergrad Separability of a Hamiltonian with spin
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Graduate S-Matrix in Quantum Field Theory
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Undergrad Why does doping make resonating valence bonds (singlet pairs) mobile?
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Undergrad How Do You Break Quantum Entanglement Bonds?
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Undergrad Is there spin-charge separation in 2d?
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Undergrad Linear combination of states with Pauli's principle
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Undergrad Question about Feynman’s path integrals
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Undergrad Separable Hamiltonian for central potential
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Graduate Power series in quantum mechanics
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High School Derivative of a particle’s energy
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High School Statistical Independence in Quantum Mechanics
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Undergrad Understanding the diagonal elements of the transition dipole moment
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High School Is Quantum Field Theory Understandable Without Advanced Mathematics?
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Graduate 1D Quantum Well - Different width "naming" gives different result ?
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Undergrad What is the Role of the Radial Position Operator in Quantum Mechanics?
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Undergrad Schrodinger Equation from Ritz Variational Method
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Graduate Computing Correlation functions
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Undergrad Understanding Landau Levels for 3D Fermionic Gas in Magnetic Field
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High School Low magnification, high resolution, experiments on photon sieves?
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High School Wave function won't collapse under a microscope?
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Undergrad Spin, Angular Momentum, Momentum, Energy & NRQM
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Undergrad Role of Fine Structure Constant in Q.E.D.?
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Undergrad Blender Particle Photon Simulation (interesting results w soft bodies)
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Undergrad Why don't we consider ##E_{com}## while solving a two body problem?
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Graduate Homodyne detection quantum state tomography
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Graduate POVMs for Infinite Dimensional Hilbert Spaces
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Undergrad Doubt in understanding degenerate perturbation theory
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Undergrad Simulating physics: the current status of lattice field theories
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Undergrad Finding ##S_x## eigenstate using experiments
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Undergrad Conventional description of the matter wave
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Graduate Molar heat capacity of CO2 is too high. Why?
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Graduate What is meant by pruning and enrichment?
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Undergrad Particle on a cylinder with harmonic oscillator along z-axis
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Undergrad Why Can We Use This Mathematical Formula for Mean Value of Measurement?
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High School Is gravitized quanta the solution rather than quantum gravity?
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Undergrad Can you tell the difference between two neutrons in an alpha particle?
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Graduate Position basis in Quantum Mechanics
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High School Are zero-point energy and inertia incompatible?
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Undergrad Can someone explain why momentum does not commute with potential?
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Undergrad Deriving the Commutator of Exchange Operator and Hamiltonian
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Undergrad Modern Atom Model: Is It Perpetual Motion?
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High School What happens when 2 beams of light interact?
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Undergrad Hamiltonian of a particle moving on the surface of a sphere
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Undergrad Matrix element in problem with hydrogen atom
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Graduate Grassmann number: a more rigorous treatment?
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Graduate Another thought experiment about spin 1/2
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Undergrad How to find the wavefunction in this case?
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Undergrad More doubts in perturbation theory
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Undergrad Classical analogy approach to quantum mechanics
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Undergrad Is it a fact that vacuum energy exists?
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Undergrad Particle on a sphere problem in quantum mechanics and its solution
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Graduate Meaning of "symbol" in algebraic field theory?
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Undergrad Classical field in quantum field theory?
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Undergrad Uncertainty in an experiment with an image viewed through a big slit
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Graduate Could Altering the Past Be Possible with Time Travel?
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Undergrad Wavefunction in polar coordinates and its bra ket notation
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Undergrad Operator acting on ket state n
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Undergrad Effective mass in terms of electron states
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Undergrad Time Dependent Sinusoidal Perturbation Energy Conservation
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Graduate Schmidt decomposition - How do I find the matrix related to the state?
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Graduate Constructing the Wigner Function from Measurements of Entangled Photons
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Undergrad A doubt regarding position representation of product of operators
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Undergrad Position representation of angular momentum operator
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High School How Does Photon Polarization Influence Electron State Changes?
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Undergrad Applications of the proposed global quantum network of clocks
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High School Quantum entanglement and energy conservation
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Graduate Possible Ways to reduce Electron field Emission threshold
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Undergrad Inner products with spherical harmonics in quantum mechanics
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Undergrad Schwartz derivation of the Feynman rules for scalar fields
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Graduate Does partial tracing make us see things that do not occur?
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Graduate Finding the Hermitian generator of a Symplectic transformation
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Undergrad Ideas about observing position and momentum at the same time
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Undergrad Is the moment of the measurement well defined?
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Undergrad Schrodinger equation for N particles in a box
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Graduate What happens when you commute Sx and Sz in spin operators?
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