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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
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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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70
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Insights What is the Anatomy of Compton Scattering?
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2
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8K
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High School Guidelines for Quantum Physics Forum
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0
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9K
Graduate Consistency of Relativistic QM
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2
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114
Undergrad Scattering Theory: Difference between use of scattering amplitude and Born approximation?
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0
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88
High School Can gravitons be detected?
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2
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36
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Graduate Wavefunction in the context of quantum physics
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16
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800
Graduate Is the 2-qubit singlet state invariant under bilateral projections?
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8
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936
Undergrad Single vs. Double slit coherence clarification please
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10
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Undergrad Which-Path from Global Momentum Measurement in Double Slit
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3
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464
Undergrad The imaginary part of the wave function
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5
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913
Graduate Two equivalent statements of time reversal symmetric Hamiltonian
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13
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879
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
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22
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6K
Undergrad Hooke's law: Constructing a force operator for electron orbitals?
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1
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440
Undergrad What forces a magnet's field to track the rotation of the magnet?
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1
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543
Undergrad Klein-Gordon equation in the nonrelativistic limit
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3
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665
Undergrad Antilinear Operators
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11
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2K
Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
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2
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591
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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965
Undergrad HUP in condensates?
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1
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416
Graduate Problem while simulating spin polarized interacting SSH model
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1
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High School Is it correct to state that all measurements count photons?
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11
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976
High School Mass & energy increments a la e = mc^2
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9
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678
Undergrad Angular Momentum Vector and Its Magnitude
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14
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2K
Undergrad Antiproton and positron annihilation
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2
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580
Undergrad Question about photon entanglement and causality
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6
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885
Undergrad Need Help on Particle Spin
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4
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871
Undergrad Can (ordo) Fermions convert to Bosons?
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5
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895
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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730
Undergrad Entanglement might be the result of an underlying law?
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4
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826
Undergrad Importance of Hanbury Brown and Twiss experiment
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13
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809
Undergrad Prof Mike Wiest's proposed link between quantum and consciousness
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18
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1K
Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
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3
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701
Graduate Lesser Green's function
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1
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635
Undergrad What does the product part of Laughlin wave function mean?
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1
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561
Undergrad Does a qubit break interference in the double slit experiment?
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10
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1K
Undergrad Schrödinger equation and classical wave equation
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2
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39
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2K
High School New idea about wave-particle duality - looking for feedback/criticism
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1
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695
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
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3
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682
Undergrad Why can’t photons “pile up” to eject an electron?
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3
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775
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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1
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960
Undergrad Do ensemble-based predictions truly describe real finite systems?
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4
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651
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
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6
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675
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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27
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1K
Undergrad Commutation of operators for particle in a box
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16
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814
High School A Time Crystal Visible to the Human Eye
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5
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566
Undergrad Quantum Entanglement and Synchronization
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6
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756
Undergrad Electron energy in atoms
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10
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879
Graduate What is the connection between entanglement and the no-cloning theorem?
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1
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628
High School Two/three photon absorption chemical substance producing photons for electricity generation
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0
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572
High School Quantum entanglement
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1
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617
Undergrad Quantum behaviour of an electron around a positively charged sphere
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18
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905
Undergrad Visual depiction of atomic orbitals
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12
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837
Undergrad Bloch Sphere generalization for more than one qubit
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4
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780
Undergrad Probabalistic determination Photon Entaglement
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6
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659
Undergrad Commutator of x and p in quantum mechanics
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4
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868
Graduate Physical properties of the vacuum in GR vs. QFT
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15
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930
Graduate Confusion about creation/annihilation operators with interaction
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1
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739
High School Schrödinger's cat question
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6
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906
Undergrad How can quantum physics contribute to medical physics?
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1
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592
Graduate Eigenstates of the Klein Gordon Field Operator
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8
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915
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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702
Undergrad Emission probability in blackbody spectrum derivation
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1
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668
Undergrad Feynman's derivation of average square distance variation in Brownian motion
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3
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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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883
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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702
Undergrad I would like some assistance working with commutators
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1
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769
Undergrad Shape of wave function (probability distribution) of a single photon
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16
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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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7
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Graduate Geometry Topology and Physics: Nakahara, Chapt. 1: Weyl Ordering
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1
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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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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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988
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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1K
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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Graduate Can scattering experiment be used to determine location and momentum of an electron?
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2
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Insights Quantum Computing for Beginners
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19
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Undergrad Bob and Alice with a Bell pair
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3
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918
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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900
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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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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964
Undergrad More information on the momentum eigenstate in the position basis
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1
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Undergrad Measurement problem - will this work?
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4
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