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 A linear theory (quantum theory)?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Can Double Slit Quantum Eraser Enable Faster-than-Light Communication?
  • · Replies 11 ·
Replies
11
Views
6K
High School Is Richard Feynman's Lecture on Quantum Physics Still Relevant Today?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How can I accurately portray quantum physics in a short film?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Who Studies Partial Wave Unitarity in Quantum Mechanics?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Does the Pauli Exclusion Principle Apply to All Quantum Particles?
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Photon's age? consider two interacting photons in the EPR effect
  • · Replies 16 ·
Replies
16
Views
5K
Graduate Photon Momentum Transfer & Energy Conservation
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Oberver Collapsing Wave funcions vs. Wheeler-Feynman Absorber
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Learn about Operator Transformation for Improved Understanding of Complex Papers
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Can High Energy Levels Allow Neutrons to Overlap in Black Holes?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Two questions concerning scattering in QED
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why Is the Fine Structure Constant Still a Mystery?
  • · Replies 11 ·
Replies
11
Views
13K
Graduate What Determines the Precession Angle of an Electron in a Magnetic Field?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Time Operator in Standard Quantum Mechanics?
  • · Replies 9 ·
Replies
9
Views
7K
Undergrad Understanding the Uncertainty Principle
  • · Replies 62 ·
3
Replies
62
Views
10K
Graduate Infinite quantum wave function
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Does Quantum Entanglement Reveal Flaws in Quantum Mechanics?
  • · Replies 25 ·
Replies
25
Views
8K
Graduate Virtual particle energy-momentum
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Quantum mechanics and the macroscopic universe .
  • · Replies 43 ·
2
Replies
43
Views
10K
Graduate Superselection Rule: Definition & Meaning
  • · Replies 15 ·
Replies
15
Views
6K
Graduate Transformations of free fields
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Rotation Invariant of Sch. Equation and [Lx,H]=0] ?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate How Do Quantum Operators Affect Position and Momentum Expectations?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Connection between Quantum and Classical worlds
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How Is CP-Violation Explored in Particle Physics?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Relation between a measurement and the operators
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Local measurements on an entangled pair. (My understanding)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Feynman propagator as distribution
  • · Replies 11 ·
Replies
11
Views
11K
Graduate Non-Physicist looking for an answer
  • · Replies 16 ·
Replies
16
Views
3K
Graduate A question about the uncertainty principle.
  • · Replies 21 ·
Replies
21
Views
5K
Graduate Two body problem of Hidrogen Atom
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Angular Momentum, Spin and SO(3), SU(2), and Lorentz Group
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How Small Can Computers Get Before They Become Phantom Devices?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Physicists Successfully Store and Retrieve Nothing
  • · Replies 3 ·
Replies
3
Views
3K
Graduate True vacuums with no energy at all inside
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Are the Quantum Numbers real ?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate A common sense objection to tunneling?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate The Meaning of Schrodingers Equation - In English
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Understanding Classical Physics: The Role of Planck Constant
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Quantum computations, irreversibility, unitarity
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Foldy-Wouthusien velocity operator
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why doesn't the hydrogen spectrum show binding energies of 4.53 or 2.26 evolts?
  • · Replies 2 ·
Replies
2
Views
6K
Graduate Heisenberg's equation of motion
  • · Replies 5 ·
Replies
5
Views
9K
Graduate Berry's phase of bloch oscillation
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What Conditions Ensure Adiabaticity in a Slowly Varying Harmonic Oscillator?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Spin of the sress-energy tensor in d=2
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Understanding Photon Emission: Random Time Delay and Duration Explained
  • · Replies 3 ·
Replies
3
Views
3K
Quantum Nonsense? Film Review on Liquid Nitrogen & Superconductor
  • · Replies 23 ·
Replies
23
Views
7K
Graduate Charge In Schroedinger's Equation
  • · Replies 7 ·
Replies
7
Views
3K
Graduate What is the result of Fourier transformation of functional theta function?
  • · Replies 3 ·
Replies
3
Views
3K
High School Getting Involved In High School?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Minimum possible energy for a particle in a box
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Momentum as the generator of translation
  • · Replies 8 ·
Replies
8
Views
13K
Undergrad What is the Uncertainty Principle in Quantum Physics?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Information RE The Double-Slit Experiment?
  • · Replies 13 ·
Replies
13
Views
3K
Graduate Have you heard about QED coherence in matter?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate What's the difference between them
  • · Replies 5 ·
Replies
5
Views
2K
Graduate The idea behind renormalization group.
  • · Replies 3 ·
Replies
3
Views
4K
Graduate What happed to the other, if one entangled particle is destroyed
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Do waves and/or particles exist at all?
  • · Replies 8 ·
Replies
8
Views
7K
Graduate Are Waves Real or Just Mathematical Constructs in Quantum Physics?
  • · Replies 18 ·
Replies
18
Views
4K
Graduate How can the Cauchy integral and Fourier integral produce the same result?
  • · Replies 317 ·
11
Replies
317
Views
83K
Graduate One-particle irreducibles in P&S
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Are Electron Orbits Really Circular or Is It Just an Artist's Depiction?
  • · Replies 2 ·
Replies
2
Views
7K
Undergrad Converting cm^-1 for Fine-Structure Energy Difference
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Maxwell's equations, Orthogonality, electric and magnetic fields in EM
  • · Replies 27 ·
Replies
27
Views
8K
Graduate How Large Can a Nucleus Get Before Instability Sets In?
  • · Replies 6 ·
Replies
6
Views
9K
Graduate Wave-Particle Duality: HotQuanta's Insight
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Ansatz: Principle, Hypothesis, Boundary Condition?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Can virtual particles appear ANYWHERE?
  • · Replies 23 ·
Replies
23
Views
6K
Graduate When do we use notion of effective mass
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Noncommuting operators and uncertainty relations
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Appropriate Concepts in the Formulation of Quantum Mechanics
  • · Replies 30 ·
2
Replies
30
Views
7K
Graduate Electron Survival Theory at 0K: Explained
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Question about the hermiticity of the momentum operator
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Visualisation of H2 molecule wavefuctions needed
  • · Replies 45 ·
2
Replies
45
Views
7K
Graduate How Do Frequencies Cancel Out in the Casimir Effect?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What is a contact transformation according to Dirac's Lectures on QFT?
  • · Replies 6 ·
Replies
6
Views
11K
Undergrad Wavelength - differences in equations
  • · Replies 4 ·
Replies
4
Views
8K
Graduate Ground State Frequency of Electron in H+
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Understanding Hilbert Space in Quantum Mechanics: A Beginner's Guide
  • · Replies 31 ·
2
Replies
31
Views
8K
Graduate Math Required for Quantum Mechanics and General Relativity
  • · Replies 45 ·
2
Replies
45
Views
7K
Graduate Why Choose Liouville Representation Over Hamiltonian in Classical Mechanics?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Starting Place For Quantum Physics
  • · Replies 19 ·
Replies
19
Views
4K
Graduate X-Ray Tube Emission: Wave Particle Duality Explained
  • · Replies 4 ·
Replies
4
Views
3K
Would anyone say that quantum physics is at all connected to spirituality?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How Does the Photoelectric Effect Transition from Wave to Particle Theory?
  • · Replies 13 ·
Replies
13
Views
4K
Undergrad Light, Current, & Magnetism Relationship?
  • · Replies 2 ·
Replies
2
Views
5K
Graduate Are Photons Truly Particles or Simply Waves?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Double Potential Well: Wave Function & Forces
  • · Replies 1 ·
Replies
1
Views
6K
Undergrad Why Electrons Don't Fall Into Nucleus of Atoms
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad What results when sound interacts with an Atom
  • · Replies 2 ·
Replies
2
Views
3K
Graduate The exact meaning of the 4 components of the Dirac Spinor
  • · Replies 14 ·
Replies
14
Views
13K
Graduate Propagator - Hankel function - infinite? - Weinberg
  • · Replies 7 ·
Replies
7
Views
6K
Graduate Commutation relation for L_3 and phi
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Undergraduate Lab: Photoelectric Effect Experiment
  • · Replies 2 ·
Replies
2
Views
3K
Graduate What is the inner product in state (ket/Hilbert) space.
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Back up a step, before Bell's theorem
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Does the Phase Factor in Wave Function Matter?
  • · Replies 5 ·
Replies
5
Views
2K