Quantum Physics Forum

Post thread
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 Valid local explanation of Bell violations? (Pegg et al., 1999; 2008)
  • Sticky
Insights A Beginner Physics Guide to Baryon Particles
  • · Replies 7 ·
Replies
7
Views
10K
  • Sticky
Insights The 7 Basic Rules of Quantum Mechanics
  • · Replies 70 ·
3
Replies
70
Views
23K
  • Sticky
Insights What is the Anatomy of Compton Scattering?
  • · Replies 2 ·
Replies
2
Views
8K
  • Sticky
High School Guidelines for Quantum Physics Forum
  • · Replies 0 ·
Replies
0
Views
8K
Graduate Two equivalent statements of time reversal symmetric Hamiltonian
  • · Replies 3 ·
Replies
3
Views
158
Undergrad Hooke's law: Constructing a force operator for electron orbitals?
  • · Replies 1 ·
Replies
1
Views
225
Undergrad What forces a magnet's field to track the rotation of the magnet?
  • · Replies 1 ·
Replies
1
Views
336
Undergrad Klein-Gordon equation in the nonrelativistic limit
  • · Replies 3 ·
Replies
3
Views
435
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
  • · Replies 20 ·
Replies
20
Views
4K
Undergrad Antilinear Operators
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
  • · Replies 2 ·
Replies
2
Views
453
Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
  • · Replies 4 ·
Replies
4
Views
742
Undergrad Single vs. Double slit coherence clarification please
  • · Replies 7 ·
Replies
7
Views
588
Undergrad HUP in condensates?
  • · Replies 1 ·
Replies
1
Views
313
High School Is it correct to state that all measurements count photons?
  • · Replies 11 ·
Replies
11
Views
851
Undergrad Angular Momentum Vector and Its Magnitude
  • · Replies 14 ·
Replies
14
Views
1K
Undergrad Antiproton and positron annihilation
  • · Replies 2 ·
Replies
2
Views
464
Undergrad Question about photon entanglement and causality
  • · Replies 6 ·
Replies
6
Views
746
Undergrad Need Help on Particle Spin
  • · Replies 4 ·
Replies
4
Views
748
Undergrad Can (ordo) Fermions convert to Bosons?
  • · Replies 5 ·
Replies
5
Views
772
Undergrad Elementary question about comparing notations of inner product
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad The Power of QM and QFT
  • · Replies 4 ·
Replies
4
Views
605
Undergrad Entanglement might be the result of an underlying law?
  • · Replies 4 ·
Replies
4
Views
658
Undergrad Importance of Hanbury Brown and Twiss experiment
  • · Replies 13 ·
Replies
13
Views
641
Undergrad Prof Mike Wiest's proposed link between quantum and consciousness
  • · Replies 18 ·
Replies
18
Views
1K
Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
  • · Replies 3 ·
Replies
3
Views
578
Graduate Lesser Green's function
  • · Replies 1 ·
Replies
1
Views
493
Undergrad What does the product part of Laughlin wave function mean?
  • · Replies 1 ·
Replies
1
Views
440
Undergrad Does a qubit break interference in the double slit experiment?
  • · Replies 10 ·
Replies
10
Views
838
Undergrad Schrödinger equation and classical wave equation
  • · Replies 39 ·
2
Replies
39
Views
2K
High School New idea about wave-particle duality - looking for feedback/criticism
  • · Replies 1 ·
Replies
1
Views
537
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
  • · Replies 3 ·
Replies
3
Views
546
Undergrad Why can’t photons “pile up” to eject an electron?
  • · Replies 3 ·
Replies
3
Views
632
Undergrad The Extended Wigner's Friend Scenarios
  • · Replies 42 ·
2
Replies
42
Views
3K
Graduate I have some naive questions about the Reeh-Schlieder theorem
  • · Replies 1 ·
Replies
1
Views
766
Undergrad Do ensemble-based predictions truly describe real finite systems?
  • · Replies 4 ·
Replies
4
Views
521
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
  • · Replies 6 ·
Replies
6
Views
549
High School Is a table levitating possible, even at a minuscule probability?
  • · Replies 32 ·
2
Replies
32
Views
872
Undergrad Energy*time uncertainty for particle decay
  • · Replies 27 ·
Replies
27
Views
814
Undergrad Commutation of operators for particle in a box
  • · Replies 16 ·
Replies
16
Views
698
Undergrad Quantum Entanglement and Synchronization
  • · Replies 6 ·
Replies
6
Views
605
Undergrad Electron energy in atoms
  • · Replies 10 ·
Replies
10
Views
751
Graduate What is the connection between entanglement and the no-cloning theorem?
  • · Replies 1 ·
Replies
1
Views
526
High School Two/three photon absorption chemical substance producing photons for electricity generation
  • · Replies 0 ·
Replies
0
Views
460
High School Quantum entanglement
  • · Replies 1 ·
Replies
1
Views
512
Undergrad Quantum behaviour of an electron around a positively charged sphere
  • · Replies 18 ·
Replies
18
Views
788
Undergrad Visual depiction of atomic orbitals
  • · Replies 12 ·
Replies
12
Views
717
High School Can gravitons be detected?
  • · Replies 28 ·
Replies
28
Views
2K
Undergrad Bloch Sphere generalization for more than one qubit
  • · Replies 4 ·
Replies
4
Views
638
Undergrad Probabalistic determination Photon Entaglement
  • · Replies 6 ·
Replies
6
Views
555
Undergrad Commutator of x and p in quantum mechanics
  • · Replies 4 ·
Replies
4
Views
714
Graduate Physical properties of the vacuum in GR vs. QFT
  • · Replies 15 ·
Replies
15
Views
745
Graduate Confusion about creation/annihilation operators with interaction
  • · Replies 1 ·
Replies
1
Views
592
High School Schrödinger's cat question
  • · Replies 6 ·
Replies
6
Views
767
Graduate Eigenstates of the Klein Gordon Field Operator
  • · Replies 8 ·
Replies
8
Views
779
Undergrad Direction of time-evolution in time reversed wave functions
  • · Replies 12 ·
Replies
12
Views
802
Graduate Angular momentum uncertainty principle and the particle on a ring
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Effects of perception
  • · Replies 4 ·
Replies
4
Views
594
Undergrad Emission probability in blackbody spectrum derivation
  • · Replies 1 ·
Replies
1
Views
563
Undergrad Phase and group velocity for the wave function
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad Validity of identical eigenfunction of commutating operators
  • · Replies 12 ·
Replies
12
Views
673
Undergrad Action of an Hermitian unitary operator member of SU(2)
  • · Replies 15 ·
Replies
15
Views
755
Undergrad About concept of wave-particle duality
  • · Replies 11 ·
Replies
11
Views
831
Undergrad Hydrogen 21 cm line time?
  • · Replies 5 ·
Replies
5
Views
601
Undergrad I would like some assistance working with commutators
  • · Replies 1 ·
Replies
1
Views
630
Undergrad Shape of wave function (probability distribution) of a single photon
  • · Replies 16 ·
Replies
16
Views
971
Undergrad Would gravitons theoretically act like photons?
  • · Replies 18 ·
Replies
18
Views
3K
Graduate Baryon CP Violation Observed at CERN
  • · Replies 7 ·
Replies
7
Views
939
Graduate Geometry Topology and Physics: Nakahara, Chapt. 1: Weyl Ordering
  • · Replies 1 ·
Replies
1
Views
1K
High School Energy-time uncertainty relation for a volume and macroscopic objects?
  • · Replies 2 ·
Replies
2
Views
873
Graduate What happens when an operator maps a vector out of the Hilbert space?
  • · Replies 59 ·
2
Replies
59
Views
5K
High School The wave function of the electron doesn't collapse when passing through air?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad New book on algebraic quantum physics
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad A question about density matricies
  • · Replies 7 ·
Replies
7
Views
851
Undergrad Density matrix representation of a density operator
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad How to understand quantum computers?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Bose-Einstein statistics and the Photon
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Explicit construction of Galilean-invariant space
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Addition of angular momenta
  • · Replies 1 ·
Replies
1
Views
886
Undergrad Quantum decoherence vs. measurement process
  • · Replies 3 ·
Replies
3
Views
809
Undergrad Quantum eraser experiment
  • · Replies 3 ·
Replies
3
Views
843
Graduate Can scattering experiment be used to determine location and momentum of an electron?
  • · Replies 2 ·
Replies
2
Views
684
Insights Quantum Computing for Beginners
  • · Replies 19 ·
Replies
19
Views
5K
Undergrad Bob and Alice with a Bell pair
  • · Replies 3 ·
Replies
3
Views
810
High School Gravitons vs photons: Does the size of the atom make any difference?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad What's the deal with instantons?
  • · Replies 1 ·
Replies
1
Views
798
Undergrad How to derive orbital angular momentum of spins in quantum mechanics?
  • · Replies 2 ·
Replies
2
Views
864
Undergrad Deriving Bogoliubov transformations correctly
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Dirac's 1972 Boston talk on Projective geometry in quantum mechanics
  • · Replies 7 ·
Replies
7
Views
987
High School Feynman QED Questions
  • · Replies 15 ·
Replies
15
Views
2K
Graduate Scattering cross section between charged particle and magnetic moment
  • · Replies 1 ·
Replies
1
Views
805
Undergrad More information on the momentum eigenstate in the position basis
  • · Replies 1 ·
Replies
1
Views
954
Undergrad Measurement problem - will this work?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Quantum wavelength in gravitation
  • · Replies 6 ·
Replies
6
Views
1K
Graduate Pauli–Villars ghost fields?
  • · Replies 8 ·
Replies
8
Views
1K
Graduate Magnetic field produced by moving charge in operator form
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Tensor products and simultaneous eigenstates
  • · Replies 1 ·
Replies
1
Views
964
Undergrad Molecular Quantum Computer Progress
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Coherence time for repeated spin measurements
  • · Replies 9 ·
Replies
9
Views
1K
Graduate John Bell 1964 toy model for spin
  • · Replies 3 ·
Replies
3
Views
1K
High School Thought experiment: Beyond the slowest measurable speed?
  • · Replies 20 ·
Replies
20
Views
2K
Undergrad Black Hole Fermion Count
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Free Schroedinger equation: time separation
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad I would like an explanation of these extra energy states
  • · Replies 3 ·
Replies
3
Views
1K