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 Reality, locality and determinacy.
  • · Replies 16 ·
Replies
16
Views
3K
Graduate What is the relationship between quantum bits and classical measurements?
  • · Replies 27 ·
Replies
27
Views
6K
Graduate New Law of Physics Could Explain Quantum Mysteries
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Photons do not travel in straight lines
  • · Replies 40 ·
2
Replies
40
Views
10K
Graduate Transition from QFT to Classical Physics using Path Integrals?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Entropy and the Uncertainty Principle
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Euclideanizing Action: Refs & Fermionic/Spin-1 YM Actions
  • · Replies 1 ·
Replies
1
Views
2K
Quick Question: Normalising phi for the Hydrogen atom.
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Problem with Path Integral Expressions in Peskin And Schroeder Section 9.1
  • · Replies 4 ·
Replies
4
Views
5K
Graduate One atom in space what happens
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Simplified Heisenberg Hamiltonian; Linear combinations of basis states
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Is the Classical Limit of Quantum Field Theory a Valid Inquiry?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Why is Rabi frequency important in physics?
  • · Replies 4 ·
Replies
4
Views
20K
Graduate How does the interaction between two quantum systems form entanglement?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Sampling at 1/n Planck Time: Synchronizing Samplers and Analyzing Data Values
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the Weyl symbol and its relation to the propagator in QFT?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Pauli's exclusion principle and cooper pairs
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Quantum Leaping & Perpetual Motion?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Does particle interaction take time?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Quantum Cosmology - Imaginary Time
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Quantum Theory & Null Hypothesis: Impact & Obsoleteness
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Path Integral Propagator Normalization in Lewis Ryder's QFT book
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Photoelectric and Compton Effects
  • · Replies 6 ·
Replies
6
Views
3K
Graduate What Are the Forbidden Regions in Finite Square Wells?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Is the Born Approximation in Cohen-Tannoudji vol 2 textbook accurate?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What's the total angular momentum operator for a system of two particles?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Photon wavelength quantization?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Where do electromagnetic waves not penetrate through holes?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Can Bethe Ansatz Solve Multiple Fermionic Particles in a 1D Infinite Well?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Understanding Spin Density Matrix Invariance
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What do you think these Weak Measurement, Quantum Uncollapse Tests. Re-write QM?
  • · Replies 29 ·
Replies
29
Views
7K
Graduate Can a Quantum Mechanic Fix Your Physics Problems?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Time and Space Theory (pleas critic and give your ideas)
  • · Replies 1 ·
Replies
1
Views
2K
High School Seeking Point Particle Explanation
  • · Replies 29 ·
Replies
29
Views
5K
Graduate Fermions in bound states and their wavefunctions
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Hilbert space dimension contradiction
  • · Replies 23 ·
Replies
23
Views
6K
Graduate What preliminary knowledge of QM should I know before learning QFT
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Invariance of Schrödinger's equation
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the significance of the LSZ reduction formula in Srednicki's QFT book?
  • · Replies 9 ·
Replies
9
Views
7K
Unreliable Sci-Fi Writer Attributes Quantum Flux
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Why is a probe field necessary in pump-probe experiments?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Little fundamental question
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Diffraction Grating Video (QED)
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Answer Me Precisely: Electronic Density Probability
  • · Replies 5 ·
Replies
5
Views
2K
High School Cave of the Winds, CO - photons
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Why Do Electromagnetic Interactions Involve Photons as Mediators?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Is free will possible in Conway and Kochen's FW theorem?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Understanding Atom Excitation: Natural vs Triggered Movement and Photon Emission
  • · Replies 3 ·
Replies
3
Views
2K
Are there any real quantum experiment videos available online?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Question on function of operators
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Are Quantum Boundaries Indefinite?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad I really with spin quantum number.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Second Quantization: What Is It?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Wavefunction for particle inside a disk
  • · Replies 13 ·
Replies
13
Views
7K
Undergrad Photoelectric Effect and light as a particle
  • · Replies 6 ·
Replies
6
Views
7K
Graduate Non-degenerate and degenerate perturbation theory
  • · Replies 13 ·
Replies
13
Views
11K
Graduate Virtual Particles: Real or Not?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Energy, Time, Position, Momentum which is more fundamental?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Fourier transform of a wave equation
  • · Replies 6 ·
Replies
6
Views
6K
Graduate The Energy Levels of a Quantum Harmonic Oscillator
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why Is the Hermiticity of the Density Operator Important in Quantum Mechanics?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate What is the relationship between temperature and emissive power for a gas?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why is the sum over all connected diagrams with a single source in QFT zero?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Isn't classical spin an instance of spin 1?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Spin 360 rotation - experiment
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Could Electrons Have an Internal Structure Beyond Fundamental Particles?
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Is causality challenged by quantum theory's reliance on indeterminacy?
  • · Replies 56 ·
2
Replies
56
Views
11K
Graduate How Does Information Influence Quantum Particle Indistinguishability?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Position and momentum operators in quantum field theory
  • · Replies 12 ·
Replies
12
Views
14K
Graduate Quantum Structures: From Theory to Practical Applications
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad What Causes an Atom to be Unstable and More Prone to Radioactive Decay?
  • · Replies 25 ·
Replies
25
Views
5K
Undergrad What Is the Casimir Effect?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Questions about variations on Double Slit experiment
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Pertubation and density matrix
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How to make light act like a particle?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Ionisation and the Photoelectrical Effect
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Hydrogen on one side, Helium on the other, and nothing in between ?
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad What CAUSES black cody radiation?
  • · Replies 7 ·
Replies
7
Views
6K
Graduate What is the definition of a momentum *measurement*?
  • · Replies 2 ·
Replies
2
Views
2K
High School Reflecting photons off a surface
  • · Replies 3 ·
Replies
3
Views
6K
Graduate How Is the Thickness of a Quantum Well Determined?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Does a Free Particle in Quantum Mechanics Have Constant Energy?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Most accurate form of maxwell equations?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Spontaneous Symmetry breaking,phase factor
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Perpendicularity of quantuum states
  • · Replies 11 ·
Replies
11
Views
2K
Graduate Understanding X Quantum Gate: Act on |i> State?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Revisiting the Born Rule: Implications for Cosmology
  • · Replies 24 ·
Replies
24
Views
5K
Graduate Is Quantum Entanglement Just Correlation or a Real Physical Process?
  • · Replies 176 ·
6
Replies
176
Views
31K
Graduate Feynman diagram: incoming and outgoing particles
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Waves - bound and unbound states
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Four momentum vector from energy-momentum-tensor
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Cassimir effect on a grand scale
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Is there a paradox involving the Dirac equation and commutation with time?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate How does the Schrödinger equation lead to the QM theory of measurement?
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Doubting the Probabilistic Future: Can You Prove Me Wrong?
  • · Replies 24 ·
Replies
24
Views
4K
High School Can energy be lost from a Photon?
  • · Replies 16 ·
Replies
16
Views
6K
Graduate Black body radiation: can you help me understand it (better)?
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Can Virtual Particles in the Vacuum be Directly Detected?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Yes, that helps clarify things. Thank you for the explanation.
  • · Replies 5 ·
Replies
5
Views
2K
Graduate QM & Hardy's Paradox: Bohm, Copenhagen, MWI
  • · Replies 8 ·
Replies
8
Views
3K