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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

Undergrad Question about discussions around quantum interpretations
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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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8K
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High School Guidelines for Quantum Physics Forum
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Undergrad Klein-Gordon equation in the nonrelativistic limit
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2
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225
Undergrad One does not “prove” the basic principles of Quantum Mechanics
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3
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Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
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20
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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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377
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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654
Undergrad Single vs. Double slit coherence clarification please
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7
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508
Undergrad HUP in condensates?
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1
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261
High School Is it correct to state that all measurements count photons?
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11
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780
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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415
Undergrad Question about photon entanglement and causality
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6
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680
Undergrad Need Help on Particle Spin
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4
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692
Undergrad Can (ordo) Fermions convert to Bosons?
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5
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720
Undergrad Elementary question about comparing notations of inner product
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6
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1K
Undergrad The Power of QM and QFT
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4
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553
Undergrad Entanglement might be the result of an underlying law?
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4
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611
Undergrad Importance of Hanbury Brown and Twiss experiment
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13
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554
Undergrad Prof Mike Wiest's proposed link between quantum and consciousness
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18
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930
Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
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3
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523
Graduate Lesser Green's function
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1
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446
Undergrad What does the product part of Laughlin wave function mean?
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1
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389
Undergrad Does a qubit break interference in the double slit experiment?
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10
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775
Undergrad Schrödinger equation and classical wave equation
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2
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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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484
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
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3
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494
Undergrad Why can’t photons “pile up” to eject an electron?
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3
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581
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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690
Undergrad Do ensemble-based predictions truly describe real finite systems?
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4
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474
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
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6
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494
High School Is a table levitating possible, even at a minuscule probability?
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2
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32
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772
Undergrad Energy*time uncertainty for particle decay
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27
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718
Undergrad Commutation of operators for particle in a box
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16
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648
Undergrad Quantum Entanglement and Synchronization
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6
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552
Undergrad Electron energy in atoms
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10
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698
Graduate What is the connection between entanglement and the no-cloning theorem?
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1
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485
High School Two/three photon absorption chemical substance producing photons for electricity generation
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0
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413
High School Quantum entanglement
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1
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466
Undergrad Quantum behaviour of an electron around a positively charged sphere
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18
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729
Undergrad Visual depiction of atomic orbitals
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12
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666
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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592
Undergrad Probabalistic determination Photon Entaglement
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6
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509
Undergrad Commutator of x and p in quantum mechanics
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4
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661
Graduate Physical properties of the vacuum in GR vs. QFT
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15
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681
Graduate Confusion about creation/annihilation operators with interaction
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1
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532
High School Schrödinger's cat question
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6
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709
Graduate Eigenstates of the Klein Gordon Field Operator
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8
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730
Undergrad Direction of time-evolution in time reversed wave functions
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12
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748
Graduate Angular momentum uncertainty principle and the particle on a ring
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5
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2K
Graduate Effects of perception
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4
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546
Undergrad Emission probability in blackbody spectrum derivation
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1
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518
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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620
Undergrad Action of an Hermitian unitary operator member of SU(2)
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15
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698
Undergrad About concept of wave-particle duality
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11
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768
Undergrad Hydrogen 21 cm line time?
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5
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545
Undergrad I would like some assistance working with commutators
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1
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562
Undergrad Shape of wave function (probability distribution) of a single photon
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16
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907
Undergrad Would gravitons theoretically act like photons?
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18
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Graduate Baryon CP Violation Observed at CERN
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874
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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2
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823
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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786
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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1
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Graduate Explicit construction of Galilean-invariant space
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Undergrad Addition of angular momenta
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1
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834
Undergrad Quantum decoherence vs. measurement process
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3
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Undergrad Quantum eraser experiment
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3
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790
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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761
High School Gravitons vs photons: Does the size of the atom make any difference?
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3
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Undergrad What's the deal with instantons?
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1
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749
Undergrad How to derive orbital angular momentum of spins in quantum mechanics?
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2
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Undergrad Deriving Bogoliubov transformations correctly
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12
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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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943
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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756
Undergrad More information on the momentum eigenstate in the position basis
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1
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902
Undergrad Measurement problem - will this work?
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4
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Undergrad Quantum wavelength in gravitation
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6
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Graduate Pauli–Villars ghost fields?
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8
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Graduate Magnetic field produced by moving charge in operator form
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14
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Undergrad Tensor products and simultaneous eigenstates
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1
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917
Undergrad Molecular Quantum Computer Progress
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Undergrad Coherence time for repeated spin measurements
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9
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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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20
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Undergrad Black Hole Fermion Count
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1
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Undergrad Free Schroedinger equation: time separation
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3
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Undergrad I would like an explanation of these extra energy states
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3
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Graduate Does Causality in QFT Require Commuting Field Operators Outside the Light Cone?
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18
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High School General question about series limits and strong lines of the emissions spectrum
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4
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