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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 Should I always be careful about dimensional consistency?
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High School Description of isolated macroscopic systems in quantum mechanics
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Undergrad Are Expectation Values Measured for Coupled Photons from SPDC?
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Undergrad Good resources for learning a little about the wave vector
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Graduate Introduction to topological field theory?
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Graduate Second Quantization in QFT
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High School What percent of everyday-life electrons are collapsed?
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Undergrad Applying Heisenberg picture to density operator
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Undergrad Mixed states from entangled state
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Undergrad Quantum entanglement. -- Spin up, spin down, isn't it the same?
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High School Electron angular momentum, gyroscope?
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Undergrad Quantum Negativity & 4-Partite Entanglement of GHZ State
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Undergrad Question about particle interactions and the forces between them
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High School Is a black hole a massive ball of photons?
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Undergrad How Does Negative Pressure Influence the Expansion of the Universe?
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High School View double slit from other end
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High School "Test of wave function collapse suggests gravity is not the answer"
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High School Does the Higgs Boson really have 0 spin?
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High School Are electronic transitions a result of a single photon?
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Undergrad Why Does Spin Down Have Lower Energy Than Spin Up in a Magnetic Field?
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Undergrad Are Different Charged Gluons Repulsive in the Gluon-Gluon Four-Point Vertex?
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Undergrad Problem with Commutator of Gauge Covariant Derivatives?
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Undergrad How is Coulomb's Law compatible with quantum physics?
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Graduate What is the true energy required to excite an atomic electron?
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Undergrad Optical spectrum analyzer related
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Graduate Why is 4-Momentum Conserved in Quantum Field Theory?
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Undergrad Is London depth in superconductors analogous to skin depth?
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High School Question about quantum entanglement
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Undergrad How Does Spin-Orbit Coupling Affect Quantum Number Validity?
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High School Sun powered by quantum tunneling - question
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Undergrad Exceptions to the postulate of equal a priori probabilities?
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High School Reduced Planck Constant vs Dark Matter?
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Undergrad Time-dependence in the Hamiltonian
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High School Turbulence and Quantum Mechanical Probabilities
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Undergrad Stimulated emission in harmonic oscillator
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Undergrad Could Light Absorption Be Linked to Quantum Tunneling?
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Undergrad Derivation of Eigenfunctions/Eigenvalues of the Momentum Operator
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Undergrad Double delta potential -- Degeneracy of bound states in one dimension?
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Undergrad Do I understand Bell's Inequality Test correctly?
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Undergrad Do Entangled Quantum Particles Remain Aligned After Initial Preparation?
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Undergrad Riddle: Where is Epsilon in Bohr Model of Atom?
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Undergrad Simulation of non-Hermitian quantum mechanics
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High School Energy needed for electron's change in energy level in an atom
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High School Understanding Light Quantization
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Undergrad Interesting Scientific American article (The end of QM?)
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High School Which one is correct? (the Matrix or Wave formulation of QM)
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Undergrad How to solve 2nd order TDSE for a Gaussian-kicked harmonic oscillator?
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Graduate Quantum Chaos: Expert Discussion and Q&A
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Undergrad What is the significance of the dispersion relation?
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Undergrad Normalization of an Eigenvector in a Matrix
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High School Spin collapse in a magnetic field
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Undergrad Free electron path without a nearby proton
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Undergrad What does it mean for spins to be anti-phase with each other?
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Undergrad Can a quantum system with internal memory be in an energy eigenstate?
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High School Understanding the Interactions of Energy with Quantum Particles and Strings
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Graduate Renormalizability conditions for a real scalar field in d dimensions
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Undergrad "Filming" a quantum measurement
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Graduate Dimension of \lambda constant in \delta potential
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Undergrad An Alternative form of Bell's Inequality
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Undergrad How does a particle's acceleration relate to the emitted photon?
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High School Wave Function Collapse using faulty recording devices.
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Undergrad Is the change in energy due to light-shift the same in all levels?
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Undergrad Question on circular polarization and the quantum eraser
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Undergrad Understanding Measurement Probability in Electron Spin: Explained by Susskind
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Undergrad Calc QED Charge Particle Repulsion/Attraction
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Undergrad Are entangled particles really separated?
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Undergrad Question on Harmonic Oscillator Series Derivation
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High School Traveling wave solution notation
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Undergrad Quantum Tunneling in an STM: ELI5 Requested
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Undergrad Spontaneous parametric down-conversion entanglement using BBO
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High School Are photons entangled with a component of the atom that emitted them?
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High School Quantum info and its indestructability
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High School Understanding Circumflex Operators: Get Help Now
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Undergrad Relation between blackbody radiation and spontaneous emission
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Undergrad Constructive Interference of Light
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Undergrad Do Interacting Bosons with Spin 2 Exist for Gluon-like Charges?
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Undergrad Rabi Hamiltonian : counter-rotating terms
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Graduate The exciton dynamics in the FMO complex
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Graduate Non-perturbative description of QFTs
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Undergrad Experimental realizatoin of sequential Stern-Gerlach's
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Undergrad Functor between the category of Hilbert Space and the category of sets
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High School Question about this equation for the expectation value
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Undergrad Explaining the Bloch-Siegert Shift - A Beginner's Guide
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Undergrad Understanding how to derive the Feynman rules out of the path integral
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Graduate How can a mixed state particle absorb a "quanta" of energy?
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Graduate Is there a symmetry in the Unruh effect?
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Undergrad To understand Bell's inequality
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High School How does a photon not "feel" electromagnetism?
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Undergrad Bell's Inequality => 4 entangled Photons impossible?
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Undergrad Dimensionless vs. dimensional "constants"
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Undergrad How to work in the |F,m_F> states in hyperfine structure
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Graduate Question about plabic graphs in the amplituhedron approach
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Undergrad Physical parameters for spin 1/2 particles
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Undergrad Issue with wavenumber in the free particle wavefunction
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Undergrad Simultaneous measurements of 1 observable
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Graduate Eigenvalues of Hyperfine Hamiltonian
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Undergrad Is the classical relation between energy and momentum valid in QM?
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Undergrad Different reference frames in QM
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Undergrad The Central Field Approximation for Many-Electron Atoms
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Undergrad Does the wave function spread more quickly after it is observed?
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