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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
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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Undergrad Form of potential operator of two interacting particles
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High School Higgs field and nuclear reactions
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Undergrad Basic question on meaning of momentum operator
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High School Special Relativity violation via Quantum Mechanics?
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Undergrad What is the role of Relativistic QM?
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Graduate What do physicists mean when they say photons have a "path"?
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High School Operator as the outcome of a measurement?
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Undergrad Propagation of uncertainty with some constants
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Undergrad E=hf for massive particles, but which Energy exactly?
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Undergrad Wavefunction of a free particle has carrier and envelope parts
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Graduate Question while I study Modern Quantum physics by Sakurai
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Graduate Are Quantum Measurements Truly Special Cases of Unitary Operators?
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Undergrad Probability when measuring a local observable
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Undergrad Finding Momentum Mean & Variance from Wavefunction
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Undergrad The probability density function for the double-slit experiment
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Undergrad Commutation relations for an interacting scalar field
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Undergrad Determination of entanglement by observing only one photon
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Graduate What is the Bell-like Inequality in Classical Physics?
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Graduate Double-Slit Experiment: Momentum & Position
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High School Virtual photons as force carriers
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High School Photon Chirality: Left, Right & Beyond
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Undergrad Difficulty in understanding step in Deriving WKB approximation
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High School In what way does light behave that is incompatible with waves?
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Undergrad What happens to photonic molecules?
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Undergrad Multiple questions about eigenstates and eigenvalues
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Graduate Generalized Forces and QED/QCD
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High School Multiple entanglements question
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Undergrad Collapse of wavefunction into a forbidden eigenstate for a free particle
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Undergrad Wave function using the time dependent Schrodinger equation
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Graduate Noether and the derivative of the Action
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Undergrad Understanding the Irreducible Solution in Classical Harmonic Oscillators
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Graduate What is the charge range for two N vacancies in a defect crystal?
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High School Special Relativity and the Measurement Problem of QM
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High School Entangled particle decoherence question
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High School "Quantum Field Theory, as Simply as Possible" upcoming publication
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Undergrad Is the Adjoint of the Position Operator Self-Adjoint?
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Undergrad Infinite Square Well with an Oscillating Wall (Klein-Gordon Equation)
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Undergrad How to apply potential operator ##V(\hat{x})##
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