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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 Universal quantum physics
High School Why does waveform exp[iwt] have negative kinetic energy?
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Undergrad Change in electron energy level and photon emission....
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Undergrad Pauli spin matrices and Eigen spinors
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Undergrad Bell's theorem and Superdeterminism
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Undergrad General Questions Related to Quantum Measurement
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Undergrad What Came First the Magnet or the Field?
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Undergrad Angular momentum operator commutation relation
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High School Is Inversion Symmetry Found in Nature or Technology?
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Undergrad Orbital angular momentum of light
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Undergrad Time independent Schrodinger equation results (1D)
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Undergrad Renormalisation and the Landau pole
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Undergrad Why does SU(2) have 3 parameters/generators like the SO(3)?
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Undergrad Do the vacuum states created by soft photons have vacuum flu
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Undergrad Wave-particle duality general question
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Undergrad Time Reversal Operator: Physics Explained
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Undergrad What is the connection between classical uncertainty and quantum mechanics?
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Graduate Vacuum polarization at intermediate distances
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Undergrad Single-mode field quantization Hamiltonian
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Undergrad Maximally entangled state expression and generalization
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Undergrad Why do I get to a contradiction?
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High School How to change electron and proton charge
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Undergrad Conceptual question about spin state rotations
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Graduate Can a Point-Like Particle Defy the Uncertainty Principle?
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Graduate Physics Challenge by QuantumQuest #1
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Undergrad Information Theory and Entropy
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Graduate Peskin/Schroeder 4.77 page (about cross-sections)
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Graduate Non-Heisenberg Uncertainty Relations
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Graduate Double slit experiment wave interference?
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High School Double slit and randomly functioning measuring devices
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High School Energy of Gamma Ray Photon with Wavelength h
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Undergrad Klein-Gordon Operator: Creating Particles at Position x
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High School Trying to understand the double-slit experiment
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High School Probability Amplitude: Understanding Photons
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Undergrad How does observation affect reality
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High School What is Decoherence and How Did Bohr and Einstein Debate Its Implications?
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High School Wave Function Collapsing Function
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High School Do wave packets really represent a free particle?
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High School Is 'Synchronized' a Misleading Term for Entangled Atoms?
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Undergrad Quantum Entanglement on the Moon
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Undergrad Propagator operator in Heinsenberg picture
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Graduate TQFT From Purely Mathematical Considerations
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High School Are vertical lines from squinting a Quantum phenomenon?
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High School Brownian motion from virtual photons?
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High School Do particles "care" about consciousness or simply the data
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Undergrad How to understand the derivation for this process in QFT?
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Undergrad What is Cn in quantum mechanics?
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Undergrad Causality preserved in Klein-Gordon equation
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Undergrad Why is entanglement crucial for quantum computing?
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Undergrad Proof of some identities regarding spin angular momentum.
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High School Energy in microwave cavity quantized?
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Graduate On the equivalence of operator vs path integral in QFT
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High School Does the Compton effect only occur at a specific angle of incidence?
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Undergrad Wu Experiment and Parity Violation
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High School What is the shortest wavelength of all? >0 or h?
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Undergrad Products of operators : products of matrices
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High School Entangled particles and lorentz contraction?
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Graduate Why is deBroglie λ for electrons the same as λ for photons?
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Undergrad Quantum Tunneling: Can it Cause Stable Systems To Transition?
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Undergrad Are continous Spectra actually discrete?
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High School Understanding Forces and Fields in Classical and Quantum Interactions
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Graduate Symmetrisation of wave function for fermions
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Undergrad Hamiltonian for spin-1/2 particle in B-field: units issue
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High School Is Classical EM Field the Same as Photon Wave Function?
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Graduate Non-locality and The First Law of Thermodynamics
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Undergrad Momentum and energy in QM and QFT
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High School Unified Quantum Field: Is it Possible?
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High School Non-Hermitian operator for superposition
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Undergrad If you shoot an electron at a wall....
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High School Mistaking QM/Measurement problems....
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Undergrad Common interaction vacuum for QED + QCD?
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Graduate Can classical EM be derived from QFT?
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Undergrad QM Phase Symmetry & Charge Conservation
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Undergrad Completeness Relation: 2 Questions Answered
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Undergrad What Is the Physics Behind Particle Traveling Over Voltage?
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High School Canonically conjugate quantities
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Undergrad Radiation passing through Planck-scale wormholes
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Graduate What Experimental Techniques Can Enhance Quantum State Preparation?
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Undergrad Deriving resolution of the identity without Dirac notation
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Graduate Dependence of entropy and temperature on Planck's constant
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Undergrad Quirk: A drag-and-drop in-browser quantum circuit simulator
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High School Is Quantum Mechanics Necessary for Understanding Water's Properties?
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Undergrad Atomic orbitals: change during excitation?
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Undergrad Phase of |0> when it appears in a product
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High School Is There a Quantum Lift Analogous to Aerodynamic Lift?
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Undergrad Would we observe a changing Planck's constant?
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Undergrad Delayed choice quantum eraser - partial information retrieval
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High School Is QE knowing how to correlate particles' measurements?
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Undergrad Introducing QM via commutators
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Undergrad What are the probabilities for different outcomes with Bose-Einstein statistics?
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Undergrad Data from a delayed choice quantum eraser experiment
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Graduate Resources for GRW, CSL collapse models
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Undergrad Why is momentum the Fourier transform of position?
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High School Some website about new Bohr model
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Undergrad Distinguishable Terms in a State
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Graduate Qbit: More than a two-state quantum-mechanical system?
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High School Double slit experiment - doesn't measurement affect photons?
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Graduate Gauge-invariant operators in correlation functions
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Undergrad They physics of phase inversion in Grover's algorithm
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Undergrad Can the energy of a particle ensemble in QFT be bounded over time?
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Undergrad How to Shut Up and Calculate a Delayed Choice Outcome
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