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)
High School Why is the Existence of a Quantum Field Questioned?
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad Doesn't wave duality for massive objects favor pilot-wave?
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Hologram theory and quantum physics = existential crisis
  • · Replies 5 ·
Replies
5
Views
3K
Duality principle is 'safe and sound'
  • · Replies 3 ·
Replies
3
Views
2K
High School Basic question about double slit interferance
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad How are eigenstates and eigenvalues related in quantum mechanics?
  • · Replies 22 ·
Replies
22
Views
3K
High School Does Dirac's Conclusion on Electron Velocity Still Align With Modern Physics?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad What is the Role of Eigenfunctions in Understanding Quantum Mechanics?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Qubit mixed state density matrix coordinates on a Bloch ball
  • · Replies 2 ·
Replies
2
Views
2K
High School Quantum Mechanics vs. Pilot-Wave thought experiment
  • · Replies 20 ·
Replies
20
Views
3K
Undergrad Can someone please explain Scott Aaronson lecture #9?
  • · Replies 29 ·
Replies
29
Views
3K
Undergrad Are two entangled photons described by the same wavefunction?
  • · Replies 6 ·
Replies
6
Views
2K
High School Interference pattern after a particle is detected?
  • · Replies 11 ·
Replies
11
Views
2K
Undergrad How does spin relate to the symmetry of a particle?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Heisenberg's Uncertainty Principle common misconceptions
  • · Replies 52 ·
2
Replies
52
Views
6K
Undergrad No r dependence in L operator?
  • · Replies 32 ·
2
Replies
32
Views
7K
High School Clarification Requested: Particles as higher dimensional objects
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How Fermat's principle interprets diffraction and interference
  • · Replies 1 ·
Replies
1
Views
1K
High School Interference pattern, one particle at a time
  • · Replies 25 ·
Replies
25
Views
4K
Undergrad Commuting observables vs. exchanging measurements
  • · Replies 5 ·
Replies
5
Views
2K
High School Electron in the double-slit experiment
  • · Replies 33 ·
2
Replies
33
Views
4K
High School What is the fundamental principle behind the operation of a laser?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Cognitive Dissonance and Quantum Mechanics?
  • · Replies 18 ·
Replies
18
Views
3K
Undergrad Why does topology matter in determining fermions and bosons?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad How is weak isospin/hypercharge calculated?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Are there different "types" of renormalization
  • · Replies 17 ·
Replies
17
Views
2K
High School Here is a good video that explains non-locality simply
  • · Replies 18 ·
Replies
18
Views
2K
Graduate Feynman rule for closed fermion loop in QED
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Classical universe and experimental choices
  • · Replies 17 ·
Replies
17
Views
2K
Undergrad Does Quantum Mechanics Deny Objective Reality Before Measurement?
  • · Replies 5 ·
Replies
5
Views
1K
High School Does right/left spin reverse in tunneling particles?
  • · Replies 17 ·
Replies
17
Views
3K
High School How does Hawking radiation work?
  • · Replies 2 ·
Replies
2
Views
2K
Can three particles be entangled?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What Are the Key Experiments and Interpretations of Quantum Physics?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Expectation value with imaginary component?
  • · Replies 25 ·
Replies
25
Views
4K
Undergrad What mediates the exchange force?
  • · Replies 23 ·
Replies
23
Views
3K
Graduate How Do Gamma Matrix Identities Relate to the Charge Conjugation Operator?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Why all the rejection of superdeterminism?
  • · Replies 112 ·
4
Replies
112
Views
15K
Undergrad Symmetrized Lagrangian (second quantization)
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Flow of charge on fermion propagator
  • · Replies 1 ·
Replies
1
Views
2K
Insights Examples of Prequantum Field Theories III: Chern-Simons-type Theories
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Does ΔPΔX = ΔEΔT? Solving the Uncertainty Principle
  • · Replies 44 ·
2
Replies
44
Views
4K
Undergrad Boltzmann with degenerate levels
  • · Replies 34 ·
2
Replies
34
Views
6K
Undergrad Energy Level Change in Adiabatic Reversible Process
  • · Replies 1 ·
Replies
1
Views
1K
High School Understanding Beta Decay: The Role of Quarks, Leptons, and Bosons
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Photoelectric absorption versus Compton scattering
  • · Replies 5 ·
Replies
5
Views
4K
Undergrad Difference between "realistic" and "predetermined"
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What Drives the Naming and Structure of One-Particle Irreducible Diagrams?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Double slit experiment in 3 dimensions?
  • · Replies 77 ·
3
Replies
77
Views
8K
Undergrad Bell's inequality experimental data
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Calculation of negative energy density in a Casimir cavity
  • · Replies 21 ·
Replies
21
Views
4K
Undergrad Bell scenarios with communication
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Internal rotation kinetic energy operator
  • · Replies 2 ·
Replies
2
Views
2K
Insights The Physics of Virtual Particles - Comments
  • · Replies 32 ·
2
Replies
32
Views
6K
Graduate Weinberg: detecting changes to QM using atomic clocks
  • · Replies 2 ·
Replies
2
Views
2K
High School Electron moving to lower energy state
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Quantum Interest Conjecture and negative energy-density
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad A question about assumptions made in derivation of LSZ formula
  • · Replies 10 ·
Replies
10
Views
3K
Could someone explain Luders Rule?
  • · Replies 3 ·
Replies
3
Views
5K
High School Summation vs Integral for Wavefunction Superposition
  • · Replies 24 ·
Replies
24
Views
3K
Graduate A surprise result using Helmann-type potential
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Understanding POVM: A Simple Explanation
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Do photons that carry orbital angular momentum have mass?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad The "complete state" of an electron
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Please help me understand quantum tunneling conceptually?
  • · Replies 13 ·
Replies
13
Views
3K
Busting the myth of the observer: the double slit experiment
  • · Replies 72 ·
3
Replies
72
Views
28K
Undergrad What is the Waveform of Virtual Photons?
  • · Replies 4 ·
Replies
4
Views
2K
High School Is the Universe Just a Computer Simulation?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Is Each Pair in a Tripartite Cubic System in a Bell State?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Occam's razor and probability in QM
  • · Replies 29 ·
Replies
29
Views
4K
Graduate Why is the Matter wave analogous to photon and derived from it?
  • · Replies 13 ·
Replies
13
Views
2K
High School Need Listing of Photon and Particle Quantum States
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Interpreting These '2 Particles in a Box' Plots
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Is nuclear fission a quantum fluctuation
  • · Replies 19 ·
Replies
19
Views
2K
Graduate Path integral formula for a state with non-trivial time dependency
  • · Replies 14 ·
Replies
14
Views
2K
High School Does Material Type Affect Double Slit Interference Patterns?
  • · Replies 15 ·
Replies
15
Views
2K
High School Bypassing Pauli Exclusion principle.
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Are fixup operations required for entanglement in photon splitting?
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Doppler Shift and Light Quanta: Questions on the Nature of Light and Observation
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Particle in the box eigenfunctions
  • · Replies 60 ·
3
Replies
60
Views
8K
Undergrad What Are Quantum Operators and the Role of Hermitian Matrices in Degeneracy?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Harmonic Oscillator equivalence
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Expert on Wick's Theorem needed
  • · Replies 14 ·
Replies
14
Views
3K
High School Why did famous people think consciousness causes collapse?
  • · Replies 43 ·
2
Replies
43
Views
8K
High School "Decoherence usually requires interaction with something macroscopic and an environment"
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad "Iterativity" of quantum potential?
  • · Replies 14 ·
Replies
14
Views
2K
High School Understanding Environment-Induced Superselection in Quantum Systems
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad A few questions about Feynman's QED Lecture
  • · Replies 14 ·
Replies
14
Views
3K
Undergrad The absolute value of the frequency in quantum mechanics
  • · Replies 2 ·
Replies
2
Views
1K
High School Double slit experiment -- consciousness and information
  • · Replies 52 ·
2
Replies
52
Views
6K
Undergrad Rotational excitation of quantum particle
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Is my solution of time-dependent Schrodinger equation right?
  • · Replies 10 ·
Replies
10
Views
2K
High School Understanding Quantum Mechanics: The Puzzle of Cutting a Pencil in MWI
  • · Replies 18 ·
Replies
18
Views
2K
Undergrad Amplitudes, Probabilities and EPR
  • · Replies 81 ·
3
Replies
81
Views
10K
Undergrad How Does Bell's Inequality Reveal Quantum Nonlocality?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad On the Heisenberg uncertainty relation
  • · Replies 49 ·
2
Replies
49
Views
9K
Undergrad How Do You Calculate the Average Orbital Kinetic Energy for Silicon?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad How Does Semiclassical State Counting Relate to Quantum Energy Eigenstates?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Gravitational Effect on Electron Eigenstates
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Odd/even symmetric/antisymmetric
  • · Replies 1 ·
Replies
1
Views
2K