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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 Does gravity cause quantum decoherence?
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Graduate What is decoherence?
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Undergrad Original HBT experiment with mercury isotope lamp
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Graduate Spontaneous emission and coherence
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Undergrad How is spin exchange interaction generalised to many electrons?
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Undergrad Electrons keeping dynamical quantum fluctuations?
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Undergrad Observing observables of an entity
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High School Does a photon's energy change as it refracts?
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Undergrad Does entanglement always conserve something?
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Undergrad Qbit pure vs mixed state space
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Graduate A particle locked inside an arrangement of Dirac delta potentials
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Undergrad Wave packet interpretation
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Undergrad Representation of Spin 1/2 quantum state
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Undergrad Energy and momentum of a photon in a medium
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Undergrad Radiation from solid black bodies
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Undergrad How many spots will a rotating Stern-Gerlach apparatus produce?
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High School Can objects in nature store light information on the quantum level?
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Undergrad Your Favorite Feynman Diagram?
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Undergrad Quantum Hall Effect and Hall Voltage
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Graduate QFT Superposition of Final States
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Undergrad Subtractive mode intensity interferometry?
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Undergrad Electron counterpart of pseudothermal light source for quantum experiments
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High School Electron's movement after getting hit by a photon that bounces at 90 degrees
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High School Origins of the no-cloning theorem
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Undergrad Feedback on Educational Script: What's a particle in QFT?
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Undergrad Are Superposition, the Uncertainty Principle, and Duality the same?
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Graduate Vacuum Energy from Correlation Functions
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Undergrad How Do Quantum Fluctuations Shape Cosmic Structures?
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Undergrad About nature of superposition of states
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Undergrad Infinite momentum is impossible, boundary term in integration by parts
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Undergrad Is the Black Hole Information Paradox Truly Resolved?
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Undergrad Artificially discretized quantum states - is it a thing?
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Undergrad Displacement operation acting on individual quadrature components
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Graduate How Are Rotations on the Bloch Sphere Implemented in Practice?
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Undergrad Phonon emission : Discrete event or a process with inner detail?
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Undergrad "Wave-particle duality" and double-slit experiment
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High School Double Slit Experiment: Dumb question that needs to be asked
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Undergrad Feynman discussion of electron diffraction
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High School Disappearance of interference pattern in double slit
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Undergrad Example of SO(2) being not simply connected
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Undergrad Conservation of energy after measurement
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Undergrad Fundamental representation and adjoint representation
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Undergrad Double Check Normalization Condition
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Graduate Question about Propagators in QFT
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Graduate Gravity Measured with Milligram masses
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Graduate Noise in Landau–Zener transition
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Graduate Understanding the Limitations of Electron Spin Resonance
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Undergrad Number of qubits needed to simulate the universe
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Graduate Vector field vs. four scalar fields ("QFT and the SM", Schwartz)
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Graduate Fisher information from likelihood function for quantum circuits
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Undergrad Why do orthogonal polarizers at slits eliminate interference pattern?
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Undergrad Is conservation of energy a local law in Quantum field theory?
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Undergrad Why is there no single slit interference when one slit is closed in a double slit experiment?
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Graduate Does Matter Really Move Like a Wave and Hit Like a Particle?
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Undergrad How does a band pass filter increase the time of arrival of photons?
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Undergrad Is the uncertainty principle applicable to single slit diffraction?
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Graduate How was the symmetry used here? ("QFT and the SM" by Schwartz)
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Undergrad Are vacuum energy and vacuum fluctuations the same thing?
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Undergrad Can a Third Particle Be Entangled with Two Existing Particles Without Breaking Their Entanglement?
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Undergrad Heisenberg Equations of Motion for Electron in EM-field
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Graduate Derivation of energy-momentum tensor in "QFT and the SM" by Schwartz
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Graduate Derivation of QM limit of QFT in "QFT and the SM" by Schwartz
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Undergrad Speed of information in a medium
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High School How addition of vectors works if every force is quantized
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Graduate What does lambda in nuclear decay mean if it is big?
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Undergrad Tunneling of light through thin metal films
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Undergrad Electron wave addition using phasor diagram
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High School Is it possible to find the energy level of a hydrogen atom in this way?
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Undergrad Robertson uncertainty relation for the angular momentum components
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Undergrad Is the Vacuum Energy Density Sign Correct for Bosons?
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Undergrad Constant phase factors in wavefunctions
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Undergrad How Does a Qubit Exist as Both 1 and 0 Simultaneously?
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Undergrad When does the separation of variables work
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Undergrad I want to expand a Gaussian wavepacket in terms of sines
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Undergrad Can a single photon of a single frequency pass through a FP cavity?
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Undergrad How Do You Compute the Density Matrix of a Bipartite State?
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Undergrad Noether's Theorem in the Presence of a Charged Operator
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Undergrad The lore on complex probabilities
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Undergrad Derivation of normal Zeeman-Effect
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Undergrad Is a Time Rotation Operator Analogous to Spatial Rotations Possible?
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Undergrad Electromagnetic radiation, photons, quantized energy levels
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Undergrad Are All Photons Truly Virtual?
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Undergrad The classical concept of work in a QCD context?
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Undergrad Virtuals particles, vacuum and infinite energy
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Undergrad The theory on the effects of polarizers on particles wavefunctions
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Undergrad TISE solutions should be combinations-of-eigenstates, why this is not?
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Undergrad Is this a valid quantum Cheshire cat?
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Undergrad Spin state, base transformation
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Graduate Question on Zeno time derivation
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Graduate Dimensions: Emergent from the Big Bang?
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Graduate Question about a research result: Feedback on whether the result is publishable
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Undergrad Basic question about Bra-Ket notation
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High School Entanglement & Superposition Probabilities
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High School How are the spins of two entangled photons measured at light speed?
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Graduate Can wave particle dualism be replaced by a monistic model?
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Undergrad Very basic questions about operators in QM
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Undergrad Why don't we bury Schrodinger's Cat?
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Undergrad Coefficients in the Schrodinger equation and the momentum operator
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Undergrad A probability of field amplitude in QFT
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Graduate What happens when entangled photons are split into different paths?
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