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 LSZ reduction coeffs etc (Srednicki)
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Mathematical models, the 'real world' and quantum mechanics
  • · Replies 7 ·
Replies
7
Views
5K
Graduate Generating Functional for Yukawa Interactions
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Genereral:Questions about Srednicki's QFT
  • · Replies 85 ·
3
Replies
85
Views
21K
Graduate Node and Nodless wavefunction?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Understanding Weyl Rule: A Comprehensive Guide with References and Equations
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How do i perform a measurement of a many body system?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is Planck's Original Deduction Correct by Today's Physics Standards?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate What happens to electron spin under Lorentz transformation?
  • · Replies 4 ·
Replies
4
Views
6K
Graduate What is observable in a relativistic quantum field theory?
  • · Replies 26 ·
Replies
26
Views
12K
Graduate Meaning of SO(4) - SU(2)xSU(2)
  • · Replies 12 ·
Replies
12
Views
15K
Graduate The maximum size of an object which can be teleported
  • · Replies 30 ·
2
Replies
30
Views
7K
Graduate Wavefunction squared is Prob. Density?
  • · Replies 9 ·
Replies
9
Views
12K
Graduate Dot product within the commutator
  • · Replies 15 ·
Replies
15
Views
11K
Graduate Need help with bra-ket algebra? Check out these resources!
  • · Replies 1 ·
Replies
1
Views
4K
Graduate How Did Quantum Field Theory and Renormalization Address Infinities in Physics?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What are the equations for angular momentum?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Quantum entanglement vs relativity of time
  • · Replies 9 ·
Replies
9
Views
6K
Graduate Covariant derivative in gauge theory
  • · Replies 8 ·
Replies
8
Views
5K
Graduate Can we prove that there is a maximal complete set of commuting
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Why don't atoms self-destruct?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What Are the States in Quantum Field Theory?
  • · Replies 147 ·
5
Replies
147
Views
38K
Graduate Understanding Quantum Numbers and Their Limits in Particle States
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad I2 Gas Molecules: Uncertainty in the Double Slit Experiment?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Delayed choice and information erasure
  • · Replies 51 ·
2
Replies
51
Views
16K
Graduate Unveiling the Connection Between SR and Multiparticle Picture in QM
  • · Replies 3 ·
Replies
3
Views
2K
Graduate New Feynman Rules in QED from Counterterms
  • · Replies 4 ·
Replies
4
Views
7K
Graduate Solve Gaussian Integrals: QFT Explained & Math Book for Physicists
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Conditions for translational invariance in space/time for a 2-point function?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Where can I learn how to manipulate operators?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Quantum Optics and Coherence Functions
  • · Replies 20 ·
Replies
20
Views
9K
Undergrad Correct units to derive Ryberg Constant in ev
  • · Replies 6 ·
Replies
6
Views
6K
Graduate How Is Spatial Coherence Derived from Heisenberg's Uncertainty Principle?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Field is more fundamental than particles
  • · Replies 28 ·
Replies
28
Views
7K
Graduate Question about the Pauli exclusion principle.
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Gauge symmetry for spin 1/2 fields
  • · Replies 14 ·
Replies
14
Views
4K
Graduate What was the quantum state at t=0 (big bang). Many thanks.
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Entagled pair and speed of light
  • · Replies 2 ·
Replies
2
Views
1K
Graduate Riemann vs. Lebesgue integral in QM
  • · Replies 12 ·
Replies
12
Views
5K
Graduate Operator-Valued Functions in Quantum Field Theory: Degrees of Freedom?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can an operator change a wave equation without changing the system?
  • · Replies 9 ·
Replies
9
Views
2K
High School How to explain uncertainty principle to a freshman
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Double Slit Exp: What Really Happened?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Why quantum field theory is not called quantum mechanics of changeable number particl
  • · Replies 10 ·
Replies
10
Views
8K
Graduate Constructing Physical Asymptotic States in \phi^{4} Theory: A Rigorous Approach
  • · Replies 29 ·
Replies
29
Views
11K
Graduate Many Boson Wavefunction (Non-Interacting)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Joy Christian's disproof of Bell
  • · Replies 70 ·
3
Replies
70
Views
17K
Graduate How Can Wick's Theorem Be Applied to Schwinger-Dyson Equations?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate What Are the Key Controversies in Quantum Measurement Theory?
  • · Replies 102 ·
4
Replies
102
Views
18K
Graduate Novice question on Quantum Mechanics
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Does the wave–particle duality apply only to electrons and photons?
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Understanding Second Quantization and Its Application in Quantum Mechanics
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Spin Triplet of Ortho Helium - Why Total Spin is 1?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Does photon spin imply its polarization
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Quantum Coherence - matter or energy?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate DBB vs EPR & GHZ: Questions & Answers
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Some very simple double slit experiment questions
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Mystery history of double-slit experiment with electrons
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Are spin-up and spin-down electrons distinguishable or indistinguishable?
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Quantum Exam Review: Answers & Info to Questions
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Is retro-causality a science fact?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Tight Binding Description of Graphene (Hamiltonian and Overlap Matrix)
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Q.M., Q.M.+Spin, Q.M.+Relativity; C^1, C^2, C^4, why ?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Trouble understanding a Peskin-Schroeder text
  • · Replies 1 ·
Replies
1
Views
2K
Graduate QED: the strange theory of light and matter. Light is made of particles ?
  • · Replies 20 ·
Replies
20
Views
11K
Graduate Double-Slit Experiment - Clarification on 'Observation'
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Why is the product of Dirac spinors a 4x4 matrix?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Exchange Interaction - Helium
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can We Solve for the Wave Function of Water?
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Use of potentials in Quantum theory
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Uncertainty Calculation for Quantum Physics Lab | General Physics FAQ
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad What Is Resonant Energy Transfer and How Does It Work?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How to solve this photoelectric equation involving specific heat capacity
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Left and right-handed Weyl spinors
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Heisenberg's 1927 paper on uncertainty
  • · Replies 4 ·
Replies
4
Views
8K
Graduate What does it mean by independent (in gauge fixing of EM field)
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Definition of Hamiltonian Density & Deriving Energy Current
  • · Replies 30 ·
2
Replies
30
Views
8K
Graduate Reformulating the Hamilton-Jacobi equation: A step-by-step guide
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Does Schrodinger's Cat Paradox Suck?
  • · Replies 157 ·
6
Replies
157
Views
30K
Graduate In order for decoherence to work, does it require the second law of
  • · Replies 15 ·
Replies
15
Views
3K
Graduate In stimulated emission how does the incident photon make release of
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Difference between 'Quantum theories'
  • · Replies 70 ·
3
Replies
70
Views
19K
Graduate Simple harmonic oscillator - scaled variables
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Has a loophole free test of Bell's inequalties been preformed yet?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate When Did Einstein First Encounter Quantum Entanglement?
  • · Replies 54 ·
2
Replies
54
Views
10K
Graduate Is there a 'decision time' for quantum states to become fixed?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What is the functional iW[J] for a system with 2 sources or 3 sources?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What causes quantum coherence in superconductivity and superfluidity?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Custom made Lagragian and Help Wanted
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How Does Fock Space Relate to Particle Interactions and States?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Time reversal symmetry breaking
  • · Replies 8 ·
Replies
8
Views
15K
Graduate The effect of the magnet in a Stern-Gerlach experiment
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How Do You Determine Irreducible Representations for Group Transformations?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Double slit experiment with detectors not recording
  • · Replies 48 ·
2
Replies
48
Views
47K
High School I am studying orbitals at school. They are very interesting and
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Understanding Pressure in Quantum Mechanics: Energy, Momentum, and Flux
  • · Replies 8 ·
Replies
8
Views
2K
Watch "The Quantum Tamers" - Find Links Here
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Entanglement Experiments: Sources & Detection
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How many pure numbers relate to elementary particles?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Quantizing the EM-Field: Eigenvalues Explained
  • · Replies 1 ·
Replies
1
Views
2K