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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
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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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Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
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21
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Graduate Two equivalent statements of time reversal symmetric Hamiltonian
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10
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401
Undergrad Hooke's law: Constructing a force operator for electron orbitals?
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1
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282
Undergrad What forces a magnet's field to track the rotation of the magnet?
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1
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376
Undergrad Klein-Gordon equation in the nonrelativistic limit
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3
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467
Undergrad Antilinear Operators
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11
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Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
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2
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470
Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
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4
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779
Undergrad Single vs. Double slit coherence clarification please
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7
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611
Undergrad HUP in condensates?
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1
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327
High School Is it correct to state that all measurements count photons?
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11
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870
Undergrad Angular Momentum Vector and Its Magnitude
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14
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Undergrad Antiproton and positron annihilation
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2
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479
Undergrad Question about photon entanglement and causality
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6
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768
Undergrad Need Help on Particle Spin
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4
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765
Undergrad Can (ordo) Fermions convert to Bosons?
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5
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791
Undergrad Elementary question about comparing notations of inner product
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6
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Undergrad The Power of QM and QFT
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4
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621
Undergrad Entanglement might be the result of an underlying law?
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4
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678
Undergrad Importance of Hanbury Brown and Twiss experiment
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13
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658
Undergrad Prof Mike Wiest's proposed link between quantum and consciousness
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18
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Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
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3
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589
Graduate Lesser Green's function
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1
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507
Undergrad What does the product part of Laughlin wave function mean?
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1
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453
Undergrad Does a qubit break interference in the double slit experiment?
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10
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862
Undergrad Schrödinger equation and classical wave equation
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39
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High School New idea about wave-particle duality - looking for feedback/criticism
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1
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551
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
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3
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565
Undergrad Why can’t photons “pile up” to eject an electron?
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3
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645
Undergrad The Extended Wigner's Friend Scenarios
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42
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Graduate I have some naive questions about the Reeh-Schlieder theorem
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1
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783
Undergrad Do ensemble-based predictions truly describe real finite systems?
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4
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533
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
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6
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566
High School Is a table levitating possible, even at a minuscule probability?
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905
Undergrad Energy*time uncertainty for particle decay
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27
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837
Undergrad Commutation of operators for particle in a box
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16
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718
Undergrad Quantum Entanglement and Synchronization
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6
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619
Undergrad Electron energy in atoms
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10
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770
Graduate What is the connection between entanglement and the no-cloning theorem?
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1
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538
High School Two/three photon absorption chemical substance producing photons for electricity generation
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471
High School Quantum entanglement
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1
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523
Undergrad Quantum behaviour of an electron around a positively charged sphere
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18
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802
Undergrad Visual depiction of atomic orbitals
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12
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729
High School Can gravitons be detected?
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28
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Undergrad Bloch Sphere generalization for more than one qubit
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4
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665
Undergrad Probabalistic determination Photon Entaglement
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6
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569
Undergrad Commutator of x and p in quantum mechanics
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4
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730
Graduate Physical properties of the vacuum in GR vs. QFT
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15
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Graduate Confusion about creation/annihilation operators with interaction
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616
High School Schrödinger's cat question
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6
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Graduate Eigenstates of the Klein Gordon Field Operator
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8
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797
Undergrad Direction of time-evolution in time reversed wave functions
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12
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Graduate Angular momentum uncertainty principle and the particle on a ring
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5
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Graduate Effects of perception
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4
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609
Undergrad Emission probability in blackbody spectrum derivation
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1
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578
Undergrad Phase and group velocity for the wave function
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14
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Undergrad Validity of identical eigenfunction of commutating operators
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12
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Undergrad Action of an Hermitian unitary operator member of SU(2)
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15
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771
Undergrad About concept of wave-particle duality
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11
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Undergrad Hydrogen 21 cm line time?
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5
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613
Undergrad I would like some assistance working with commutators
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649
Undergrad Shape of wave function (probability distribution) of a single photon
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Undergrad Would gravitons theoretically act like photons?
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Graduate Baryon CP Violation Observed at CERN
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Graduate Geometry Topology and Physics: Nakahara, Chapt. 1: Weyl Ordering
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High School Energy-time uncertainty relation for a volume and macroscopic objects?
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Graduate What happens when an operator maps a vector out of the Hilbert space?
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High School The wave function of the electron doesn't collapse when passing through air?
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9
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Undergrad New book on algebraic quantum physics
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6
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Undergrad A question about density matricies
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7
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865
Undergrad Density matrix representation of a density operator
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8
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Undergrad How to understand quantum computers?
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9
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Undergrad Bose-Einstein statistics and the Photon
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Graduate Explicit construction of Galilean-invariant space
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Undergrad Addition of angular momenta
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Undergrad Quantum decoherence vs. measurement process
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Undergrad Quantum eraser experiment
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Graduate Can scattering experiment be used to determine location and momentum of an electron?
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Insights Quantum Computing for Beginners
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Undergrad Bob and Alice with a Bell pair
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3
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High School Gravitons vs photons: Does the size of the atom make any difference?
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Undergrad What's the deal with instantons?
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Undergrad How to derive orbital angular momentum of spins in quantum mechanics?
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Undergrad Deriving Bogoliubov transformations correctly
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Undergrad Dirac's 1972 Boston talk on Projective geometry in quantum mechanics
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7
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High School Feynman QED Questions
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15
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Graduate Scattering cross section between charged particle and magnetic moment
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1
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825
Undergrad More information on the momentum eigenstate in the position basis
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969
Undergrad Measurement problem - will this work?
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Undergrad Quantum wavelength in gravitation
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Graduate Pauli–Villars ghost fields?
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Graduate Magnetic field produced by moving charge in operator form
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Undergrad Tensor products and simultaneous eigenstates
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Undergrad Molecular Quantum Computer Progress
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Undergrad Coherence time for repeated spin measurements
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Graduate John Bell 1964 toy model for spin
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3
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High School Thought experiment: Beyond the slowest measurable speed?
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Undergrad Black Hole Fermion Count
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Undergrad Free Schroedinger equation: time separation
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Undergrad I would like an explanation of these extra energy states
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