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

Graduate Understanding Barandes' microscopic theory of causality
  • 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
24K
  • 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
9K
Graduate Consistency of Relativistic QM
  • · Replies 2 ·
Replies
2
Views
174
Undergrad Scattering Theory: Difference between use of scattering amplitude and Born approximation?
  • · Replies 0 ·
Replies
0
Views
112
High School Can gravitons be detected?
  • · Replies 36 ·
2
Replies
36
Views
3K
Graduate Wavefunction in the context of quantum physics
  • · Replies 16 ·
Replies
16
Views
814
Graduate Is the 2-qubit singlet state invariant under bilateral projections?
  • · Replies 8 ·
Replies
8
Views
940
Undergrad Single vs. Double slit coherence clarification please
  • · Replies 10 ·
Replies
10
Views
1K
Undergrad Which-Path from Global Momentum Measurement in Double Slit
  • · Replies 3 ·
Replies
3
Views
471
Undergrad The imaginary part of the wave function
  • · Replies 5 ·
Replies
5
Views
924
Graduate Two equivalent statements of time reversal symmetric Hamiltonian
  • · Replies 13 ·
Replies
13
Views
883
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
  • · Replies 22 ·
Replies
22
Views
6K
Undergrad Hooke's law: Constructing a force operator for electron orbitals?
  • · Replies 1 ·
Replies
1
Views
443
Undergrad What forces a magnet's field to track the rotation of the magnet?
  • · Replies 1 ·
Replies
1
Views
546
Undergrad Klein-Gordon equation in the nonrelativistic limit
  • · Replies 3 ·
Replies
3
Views
668
Undergrad Antilinear Operators
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
  • · Replies 2 ·
Replies
2
Views
594
Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
  • · Replies 4 ·
Replies
4
Views
969
Undergrad HUP in condensates?
  • · Replies 1 ·
Replies
1
Views
420
Graduate Problem while simulating spin polarized interacting SSH model
  • · Replies 1 ·
Replies
1
Views
1K
High School Is it correct to state that all measurements count photons?
  • · Replies 11 ·
Replies
11
Views
981
High School Mass & energy increments a la e = mc^2
  • · Replies 9 ·
Replies
9
Views
682
Undergrad Angular Momentum Vector and Its Magnitude
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Antiproton and positron annihilation
  • · Replies 2 ·
Replies
2
Views
583
Undergrad Question about photon entanglement and causality
  • · Replies 6 ·
Replies
6
Views
889
Undergrad Need Help on Particle Spin
  • · Replies 4 ·
Replies
4
Views
875
Undergrad Can (ordo) Fermions convert to Bosons?
  • · Replies 5 ·
Replies
5
Views
899
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
734
Undergrad Entanglement might be the result of an underlying law?
  • · Replies 4 ·
Replies
4
Views
829
Undergrad Importance of Hanbury Brown and Twiss experiment
  • · Replies 13 ·
Replies
13
Views
813
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
704
Graduate Lesser Green's function
  • · Replies 1 ·
Replies
1
Views
641
Undergrad What does the product part of Laughlin wave function mean?
  • · Replies 1 ·
Replies
1
Views
564
Undergrad Does a qubit break interference in the double slit experiment?
  • · Replies 10 ·
Replies
10
Views
1K
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
703
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
  • · Replies 3 ·
Replies
3
Views
688
Undergrad Why can’t photons “pile up” to eject an electron?
  • · Replies 3 ·
Replies
3
Views
778
Undergrad The Extended Wigner's Friend Scenarios
  • · Replies 42 ·
2
Replies
42
Views
4K
Graduate I have some naive questions about the Reeh-Schlieder theorem
  • · Replies 1 ·
Replies
1
Views
965
Undergrad Do ensemble-based predictions truly describe real finite systems?
  • · Replies 4 ·
Replies
4
Views
655
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
  • · Replies 6 ·
Replies
6
Views
680
High School Is a table levitating possible, even at a minuscule probability?
  • · Replies 32 ·
2
Replies
32
Views
1K
Undergrad Energy*time uncertainty for particle decay
  • · Replies 27 ·
Replies
27
Views
1K
Undergrad Commutation of operators for particle in a box
  • · Replies 16 ·
Replies
16
Views
818
High School A Time Crystal Visible to the Human Eye
  • · Replies 5 ·
Replies
5
Views
570
Undergrad Quantum Entanglement and Synchronization
  • · Replies 6 ·
Replies
6
Views
762
Undergrad Electron energy in atoms
  • · Replies 10 ·
Replies
10
Views
883
Graduate What is the connection between entanglement and the no-cloning theorem?
  • · Replies 1 ·
Replies
1
Views
632
High School Two/three photon absorption chemical substance producing photons for electricity generation
  • · Replies 0 ·
Replies
0
Views
575
High School Quantum entanglement
  • · Replies 1 ·
Replies
1
Views
623
Undergrad Quantum behaviour of an electron around a positively charged sphere
  • · Replies 18 ·
Replies
18
Views
908
Undergrad Visual depiction of atomic orbitals
  • · Replies 12 ·
Replies
12
Views
841
Undergrad Bloch Sphere generalization for more than one qubit
  • · Replies 4 ·
Replies
4
Views
783
Undergrad Probabalistic determination Photon Entaglement
  • · Replies 6 ·
Replies
6
Views
663
Undergrad Commutator of x and p in quantum mechanics
  • · Replies 4 ·
Replies
4
Views
873
Graduate Physical properties of the vacuum in GR vs. QFT
  • · Replies 15 ·
Replies
15
Views
936
Graduate Confusion about creation/annihilation operators with interaction
  • · Replies 1 ·
Replies
1
Views
743
High School Schrödinger's cat question
  • · Replies 6 ·
Replies
6
Views
909
Undergrad How can quantum physics contribute to medical physics?
  • · Replies 1 ·
Replies
1
Views
595
Graduate Eigenstates of the Klein Gordon Field Operator
  • · Replies 8 ·
Replies
8
Views
918
Undergrad Direction of time-evolution in time reversed wave functions
  • · Replies 12 ·
Replies
12
Views
940
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
705
Undergrad Emission probability in blackbody spectrum derivation
  • · Replies 1 ·
Replies
1
Views
672
Undergrad Feynman's derivation of average square distance variation in Brownian motion
  • · Replies 3 ·
Replies
3
Views
791
Undergrad Phase and group velocity for the wave function
  • · Replies 14 ·
Replies
14
Views
4K
Undergrad Validity of identical eigenfunction of commutating operators
  • · Replies 12 ·
Replies
12
Views
817
Undergrad Action of an Hermitian unitary operator member of SU(2)
  • · Replies 15 ·
Replies
15
Views
887
Undergrad About concept of wave-particle duality
  • · Replies 11 ·
Replies
11
Views
985
Undergrad Hydrogen 21 cm line time?
  • · Replies 5 ·
Replies
5
Views
705
Undergrad I would like some assistance working with commutators
  • · Replies 1 ·
Replies
1
Views
773
Undergrad Shape of wave function (probability distribution) of a single photon
  • · Replies 16 ·
Replies
16
Views
1K
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
1K
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
998
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
992
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
1K
Undergrad Quantum decoherence vs. measurement process
  • · Replies 3 ·
Replies
3
Views
934
Undergrad Quantum eraser experiment
  • · Replies 3 ·
Replies
3
Views
979
Graduate Can scattering experiment be used to determine location and momentum of an electron?
  • · Replies 2 ·
Replies
2
Views
823
Insights Quantum Computing for Beginners
  • · Replies 19 ·
Replies
19
Views
5K
Undergrad Bob and Alice with a Bell pair
  • · Replies 3 ·
Replies
3
Views
921
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
904
Undergrad How to derive orbital angular momentum of spins in quantum mechanics?
  • · Replies 2 ·
Replies
2
Views
993
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
1K
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
969
Undergrad More information on the momentum eigenstate in the position basis
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Measurement problem - will this work?
  • · Replies 4 ·
Replies
4
Views
2K