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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

Seeking clarity on the physical definition of an observer
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Insights A Beginner Physics Guide to Baryon Particles
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Insights The 7 Basic Rules of Quantum Mechanics
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Insights What is the Anatomy of Compton Scattering?
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High School Guidelines for Quantum Physics Forum
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Undergrad On the Quantum Nature of EM Waves
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Graduate Gauge conditions in interaction theory
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Graduate Relationship between superconductors and gravity
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Graduate Six Textbook Mistakes in Quantum Field Theory
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Undergrad Particle field strength and sensitivity
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High School Seemingly odd quantum tunneling
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High School Question about the spatial extent of a single photon in entanglement
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Graduate Gravitons
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Undergrad What effect do gravitons have on electrons?
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Need study guidance/roadmap for Quantum Physics
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High School A Recent Article claims that a paper's findings show "collapse" in real-world environments. Is this serious?
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Undergrad Ellipses in Quantum Physics -- general question
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Undergrad Why is a Gaussian function used to represent a wave packet?
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High School Gravitons/Gravity passing through objects
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Undergrad Ramsauer and Townsend effect: history and explanation
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Undergrad How do you apply perturbation theory to a magnetic field Hamiltonian?
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Undergrad Prof Mike Wiest's proposed link between quantum and consciousness
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Undergrad ##r-##independent angular momentum in quantum mechanics
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Undergrad How do you derive $x = ihbar d/dp$? Why does this equation hold true?
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High School Needs explanation for P in quantum tunneling formula
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14
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High School Trivial quantum entanglement question (from a rookie)
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Graduate Why does QM split into two evolution types?
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Graduate Super fluids and superconductors at the molecular level
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High School Classic question regarding the nature of quantum tunneling
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High School Knowledge and information in the physical world
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16
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Undergrad Help Proving the Momentum Shift Operator
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4
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Undergrad The equivalent concept of phase change in classical mechanics
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Graduate Quantum properties and Van Hove singularty
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Undergrad How do bar detectors work in gravitational wave detectors?
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High School Photoelectric and summation of photons energy
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Undergrad 2D rotation and angular momentum uncertainty
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5
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Undergrad Scattering Theory: Difference between use of scattering amplitude and Born approximation?
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Graduate Exact symmetry, quantum states, and symmetric dynamics
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Undergrad Necessary conditions for the uncertainty principle
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Undergrad Why aren't photons from a laser considered entangled?
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High School Interesting paper on QM in Scientific American
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Graduate Avalanche photon detectors
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High School Electron absorbs photon, but what happens to the photon?
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Graduate Heisenberg's Re-interpretation of Bohr-Sommerfeld Quantization Condition in his 1925 'Umdeutung' paper (p12)
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Graduate Consistency of Relativistic QM
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High School Can gravitons be detected?
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Graduate Some derivation in QFT in Curved SpaceTime by Birrell and Davies
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Undergrad The imaginary part of the wave function
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Graduate Wavefunction in the context of quantum physics
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Graduate Is the 2-qubit singlet state invariant under bilateral projections?
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Undergrad Single vs. Double slit coherence clarification please
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Undergrad Which-Path from Global Momentum Measurement in Double Slit
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Graduate Two equivalent statements of time reversal symmetric Hamiltonian
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Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
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Undergrad Hooke's law: Constructing a force operator for electron orbitals?
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Undergrad What forces a magnet's field to track the rotation of the magnet?
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Undergrad Klein-Gordon equation in the nonrelativistic limit
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Undergrad Antilinear Operators
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Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
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Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
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Undergrad HUP in condensates?
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Graduate Problem while simulating spin polarized interacting SSH model
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High School Is it correct to state that all measurements count photons?
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High School Mass & energy increments a la e = mc^2
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Undergrad Angular Momentum Vector and Its Magnitude
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Undergrad Antiproton and positron annihilation
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Undergrad Question about photon entanglement and causality
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Undergrad Need Help on Particle Spin
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Undergrad Can (ordo) Fermions convert to Bosons?
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Undergrad Elementary question about comparing notations of inner product
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Undergrad The Power of QM and QFT
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Undergrad Entanglement might be the result of an underlying law?
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Undergrad Importance of Hanbury Brown and Twiss experiment
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Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
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Graduate Lesser Green's function
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Undergrad What does the product part of Laughlin wave function mean?
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Undergrad Does a qubit break interference in the double slit experiment?
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Undergrad Schrödinger equation and classical wave equation
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High School New idea about wave-particle duality - looking for feedback/criticism
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Undergrad Is Maxwell's electromagnetism an effective (field) theory?
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Undergrad Why can’t photons “pile up” to eject an electron?
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Undergrad The Extended Wigner's Friend Scenarios
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Graduate I have some naive questions about the Reeh-Schlieder theorem
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Undergrad Do ensemble-based predictions truly describe real finite systems?
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Undergrad How strong is the justification for low probability extreme thermal fluctuations?
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High School Is a table levitating possible, even at a minuscule probability?
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Undergrad Energy*time uncertainty for particle decay
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Undergrad Commutation of operators for particle in a box
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High School A Time Crystal Visible to the Human Eye
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Undergrad Quantum Entanglement and Synchronization
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Undergrad Electron energy in atoms
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Graduate What is the connection between entanglement and the no-cloning theorem?
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High School Two/three photon absorption chemical substance producing photons for electricity generation
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High School Quantum entanglement
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Undergrad Quantum behaviour of an electron around a positively charged sphere
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Undergrad Visual depiction of atomic orbitals
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Undergrad Bloch Sphere generalization for more than one qubit
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Undergrad Probabalistic determination Photon Entaglement
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Undergrad Commutator of x and p in quantum mechanics
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Graduate Physical properties of the vacuum in GR vs. QFT
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Graduate Confusion about creation/annihilation operators with interaction
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High School Schrödinger's cat question
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Undergrad How can quantum physics contribute to medical physics?
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Graduate Eigenstates of the Klein Gordon Field Operator
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Undergrad Direction of time-evolution in time reversed wave functions
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