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
Graduate Kinetic energy of two particles
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Quantum mechanics is not weird, unless presented as such
  • · Replies 544 ·
19
Replies
544
Views
60K
Graduate Why helicity of photon is 1 but not 3?
  • · Replies 37 ·
2
Replies
37
Views
4K
Undergrad What does Double slit experiment actually mean
  • · Replies 14 ·
Replies
14
Views
4K
Graduate What's the difference between these two equations?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Is there any reason i is left in the denominator here?
  • · Replies 2 ·
Replies
2
Views
991
Graduate Decoherence and apparent collapse
  • · Replies 53 ·
2
Replies
53
Views
4K
Graduate Are tracks in collision experiments proof of particles?
  • · Replies 85 ·
3
Replies
85
Views
13K
Graduate Spectral Gap or Gapless Undecidable
  • · Replies 62 ·
3
Replies
62
Views
9K
Graduate Can All Particles of a Cat Be in Superposition Simultaneously?
  • · Replies 60 ·
3
Replies
60
Views
6K
Graduate Why is Decoherence Needed in Quantum Mechanics?
  • · Replies 82 ·
3
Replies
82
Views
8K
RIP Prof Rudolf Haag (5 Jan 2016)
  • · Replies 5 ·
Replies
5
Views
1K
Graduate What's the name of the wavefxn int. showing normalizability?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Hamiltonian and momentum operator acting on a momentum eigenstate
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Weinberg Lectures on QM (2013 ed.), Equation 3.6.18
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Why Is radiation the highest form of entropy?
  • · Replies 25 ·
Replies
25
Views
3K
Graduate Relativistic vs. Nonrelativistic KE Operator question
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Measurement and Preparation in the Double Slit Experiment
  • · Replies 32 ·
2
Replies
32
Views
3K
Graduate Spin imparting angular momentum
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Vectors, Hilbert Spaces, and Tensor Products
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Now that all loopholes are closed
  • · Replies 10 ·
Replies
10
Views
1K
Graduate Exponential of Pauli spin matrices
  • · Replies 1 ·
Replies
1
Views
6K
Graduate Problem in basic equalities for Huckel energy
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Why are Diagonal Elements of a Time-Dependent Perturbed Hamiltonian Often Zero?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Advanced quantum mechanics book with solutions
  • · Replies 6 ·
Replies
6
Views
8K
Insights Struggles With The Continuum - Part 2 - Comments
  • · Replies 39 ·
2
Replies
39
Views
7K
Graduate Quantum state vector and physical state
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Existence of Space: Does it Exist at Planck Level?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate An abstract long-distance correlation experiment
  • · Replies 242 ·
9
Replies
242
Views
26K
Graduate Understanding the optimal approximate qubit cloning method
  • · Replies 0 ·
Replies
0
Views
1K
Graduate Solving for Wavelength: What Did I Do Wrong?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Are gravitons the quanta of spacetime?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Does measurement violate unitarity?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Asynchronous Entangled Photon pairs
  • · Replies 2 ·
Replies
2
Views
2K
Graduate References for tunneling decay in magnetic fields
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Few questions about photoelectricity
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What is nonlocality in relativity ?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Quantum Entanglement: No Comm Thm & Counterfactual Def
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Did only parts of the diamond get entangled?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Mathematical Proof that Photons have No Rest Mass
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Berry's Curvature Equation cross product calculation
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Different wave function for different observers?
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Schrodinger's Cat radioactive source
  • · Replies 44 ·
2
Replies
44
Views
6K
Graduate Eigenstates of Orbital Angular Momentum
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Coulomb potential as an operator
  • · Replies 37 ·
2
Replies
37
Views
6K
Graduate What does the `|' represent in an infinite product notation?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Pathria page 2 -- total energy for mutually interacting particles
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What Happens to Entangled Particles During Collider Experiments?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Does a polarisationfilter do a measurement?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Reconciling Quantum Field Theory and General Relativity: Progress and Challenges
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Lagrangian invariance under infinitesimal transformations
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Energy conservation+superpositions=entanglement?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Understanding the Measurement and Interaction of Electrons: A Beginner's Guide
  • · Replies 143 ·
5
Replies
143
Views
12K
High School Limits of no-communication theorem
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Error : what is n in quantum mechanics
  • · Replies 20 ·
Replies
20
Views
3K
Graduate Mind over matter reality or myth?
  • · Replies 54 ·
2
Replies
54
Views
11K
Graduate Quantum antenna thought experiment
  • · Replies 6 ·
Replies
6
Views
1K
Graduate Entangled states before observation.
  • · Replies 41 ·
2
Replies
41
Views
4K
Graduate Possible support to Penrose's OR theory?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Symmetry groups of molecule - Hamiltonian
  • · Replies 4 ·
Replies
4
Views
1K
High School Are these good analogues for entanglement
  • · Replies 11 ·
Replies
11
Views
2K
High School Is entanglement preserved on re-emission of photons
  • · Replies 7 ·
Replies
7
Views
1K
Graduate Understanding Bell's inequality
  • · Replies 29 ·
Replies
29
Views
5K
Graduate Are space and time really quantized?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Angular momentum during bremsstrahlung
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Do Relativistic Effects Impact Probabilistic Quantum Mechanics?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can calcium ions be used as a source of entangled photons
  • · Replies 7 ·
Replies
7
Views
3K
Graduate What is the difference between entanglement and coherence
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Stern Gerlach and Nuclear Spin?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Why Does the Stern-Gerlach Experiment Show Discrete Deflection Angles?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Question reguarding superpostion
  • · Replies 1 ·
Replies
1
Views
768
Graduate Probability of entangled photons passing filter independent?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Shocker: PR Box is logically inconsistent
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Is the collapse indispensable?
  • · Replies 185 ·
7
Replies
185
Views
17K
Graduate Is macroscopic entanglement a hidden property of all objects?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Energy eigenvalue and mass inverse relation?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Can you name a few interactions that entangle particles
  • · Replies 3 ·
Replies
3
Views
2K
Graduate SO(4) symmetry in the Coulomb potential
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Increase of Uncertainty over Time
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Why can we believe the value of field is fluctuated?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate What Term must be used for this formalism?
  • · Replies 6 ·
Replies
6
Views
1K
Graduate Photon energy in Heisenberg picture
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Any difference between BEC correlations and entangled states
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Ergodocity and unitary evolution
  • · Replies 26 ·
Replies
26
Views
4K
Graduate Is this mathematical proof that beamsplitters entangle photons
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How to measure momentum in principle?
  • · Replies 22 ·
Replies
22
Views
3K
Graduate Formation of stars and non-conservation of angular momentum
  • · Replies 1 ·
Replies
1
Views
1K
Graduate How does a virtual particle becomes a point interaction?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Can a dust particle be re-prepared with further photons?
  • · Replies 18 ·
Replies
18
Views
2K
Graduate Overlap as function of distance
  • · Replies 2 ·
Replies
2
Views
1K
Graduate The phase between 2 waves describing 2 entangled particles?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Can particles be absorbed into a field?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Wave Function Collapse: Does Interaction of Photons & Objects Force It?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Variable separation - Schrödinger equation
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Representation of Dirac Spinors
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Entangled Photons: What Happens to Photon B? Can Two Combine?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Cause of quantum effects on small and large scales
  • · Replies 13 ·
Replies
13
Views
2K
Graduate Is information conserved in quantum physics?
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Determinism and Uncertainity Principle
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Raising and Lowering Operators
  • · Replies 2 ·
Replies
2
Views
1K