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
Undergrad Why do electrons absorb light and jump to higher energy levels?
  • · Replies 24 ·
Replies
24
Views
4K
Graduate Consensus about Non-Locality & Spacetime
  • · Replies 60 ·
3
Replies
60
Views
10K
Undergrad Wysips transparent solar cell.
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Superselection Rule Results from Schrodinger Equation
  • · Replies 6 ·
Replies
6
Views
2K
Graduate What happens to an electron when a photon is reflected?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Is superposition dependant on the measurement of sound as well as sight?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Uncertainty Principle & Neutrino Probing: Can we Describe it w/ Semi-Classics?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why is Casimir operator to be an invariant of coresponding Lie Algebra?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How you come up with the wave func. in the first place?
  • · Replies 16 ·
Replies
16
Views
3K
Graduate Superposition in quantum computing
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why explain with both vectors and functions
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Wavefunction Collapse: Timeline & Effects
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Entangled photon polarization correlation
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Path Integral Basics (Why dimension increases in the integrals?)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What is the density of states?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Can light excite an electron from ground state to a higher state?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Peskin Equation (7.51): Analytic Continuation and Validity
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Energy-momentum tensor for the Dirac spinor
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Pion decay and neutrino oscillation in OPERA
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Klein Gordon equation and particles with spin
  • · Replies 21 ·
Replies
21
Views
7K
Graduate How many ''charges'' are there in SU(2) and SU(3) symmetry?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate The state space in quantum field theory
  • · Replies 17 ·
Replies
17
Views
8K
Graduate Cancellation of infrared divergence
  • · Replies 8 ·
Replies
8
Views
6K
Graduate Understanding the AC Stark Effect: A Brief Description
  • · Replies 1 ·
Replies
1
Views
9K
Graduate Classical Stat Mech with Uncertain Initial Conditions vs. Quantum
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Unitary Quantum Cloner: Micro-Macro Entanglement & CHSH Inequality
  • · Replies 1 ·
Replies
1
Views
2K
Graduate The QED experiments Feynman describes in his Auckland lectures on Vega website
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How to find the Majorana matrices?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Even Wave Function in 1D Symmetric Potentials: Can We?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Completeness of eigenvectors in a complete, commuting set
  • · Replies 10 ·
Replies
10
Views
5K
Graduate Question on uncertainty principle
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Decoherence and the randomness of collapse
  • · Replies 40 ·
2
Replies
40
Views
8K
Graduate Quantum Zeno Effect and quantum decay
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Given a potential, qualitatively deducing the energy levels?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How to Calculate Clebsh-Gordan Coefficients in Fortran?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Spatial representation of field commutator
  • · Replies 12 ·
Replies
12
Views
6K
Graduate Can one learn Q.Physics self taught?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Physical meaning of zero eigenvalue
  • · Replies 4 ·
Replies
4
Views
5K
Graduate Why symplectic symmetry has N(N+1)/2 generators?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Annihilation operator acting on a Fock state
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Meaning of Peskin equation (7.25)
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Poisson Bracket to Commutator, What Does it REALLY Mean?
  • · Replies 7 ·
Replies
7
Views
9K
Graduate Does Pauli's Exclusion Principle Apply to the Entire Universe?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Why Superselection Rules are Physically Impossible
  • · Replies 26 ·
Replies
26
Views
6K
Graduate If one generator commutes with all other,why must it be generator of U(1)?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Bell inequality experiments and photon polarisation issue
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Can I Start with Leonard Susskind's QFT Lectures Without Prior Courses?
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Understanding Wave Function and Schrodinger Wave Equation
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Hamiltonian and Commuting operators
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Energy release from Graviton / Higgs Boson
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Why isn't p^4 Hermitian for hydrogen-like l=0 wavefunctions?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Angular Momentum Eigenvalues/Significance of QN l
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why the even Eigen states have less energy than odd ones?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Is angular momentum something that is characteristic for a particle?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Gauge Group Choice: Can U(1) Describe Color & Weak Force?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Physical mechanism for decoherence?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What happens to the amplitude of a photon in the double slit experiment?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Would time travel to the past be possible if ?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Hidden Variable - How to calculate the straight line
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Effective mass of Dirac electron increased by electrostatic potential?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How can Black Holes emit radiation?
  • · Replies 33 ·
2
Replies
33
Views
11K
Graduate History/Derivation of multi-particle wave functions?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Excitation by photons smaller than energy interval
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why is an Electric Current Necessary to Measure the Casimir Effect?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What Are Potential Wells in Lennard Jones Potential?
  • · Replies 4 ·
Replies
4
Views
2K
High School Difference between static and magnetic attraction
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Why do gluons and W and Z bosons have a limited range?
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Momentum Operator w/ Dirac Delta Potential: Justification
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Quantum Zeno Effect and Decoherence
  • · Replies 3 ·
Replies
3
Views
4K
Graduate The Discontinuity of Wave Functions in a Dirac Delta Potential
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Dirac Notation in building Path Integrals
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Calculating Momentum of a Particle: Q&A
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Derivation of the one-particle Green's function?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate No 2 electrons can have the same energy state
  • · Replies 6 ·
Replies
6
Views
10K
Graduate Can real bodies deviate from Planck's law?
  • · Replies 13 ·
Replies
13
Views
7K
Graduate Measure for momentum in curved space
  • · Replies 2 ·
Replies
2
Views
2K
High School What do pervading and aether mean?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Tap Dark Energy for Energy Needs: Ideas and Questions
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Noob to PF, Quantum Foam question triangles?
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Exploring the Inter-Relationship of Nature's Constants
  • · Replies 3 ·
Replies
3
Views
5K
Graduate Why are there no well-defined energy states in nature?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Brian Cox explain Pauli exclusion principle
  • · Replies 2 ·
Replies
2
Views
6K
Graduate Angular momentum and the hydrogenic atom
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Understanding Peskin's Argument for Equation 6.46
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What Is the Explanation for Quantum Mechanics at the Quantum Scale?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Why is z-axis so special in hydrodgen problem?
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Momentum Operator question - Proof found in Intro to Griffiths QM
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Klein-Gordon Equation: Derivation of Density Relativistic Transform
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Why do L² and L_z form a CSCO?
  • · Replies 12 ·
Replies
12
Views
4K
Graduate Writing Down Single Particle State in P&S Notation
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Possible Paths and Interference Patterns in the Double Slit Experiment
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Quantum Entanglement inside & outside Event Horizon
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Instanton contribution to two point function
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Question about Electron Action and study material.
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Are Current Experiments Impacting Quantum Coherence in Consciousness?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Renormalization group and universality
  • · Replies 14 ·
Replies
14
Views
4K
Graduate How Does Schwinger's Method Reveal Information About Feynman's Propagator?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Why does the momentum of a matter wave depend on the phase velocity?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Understand Orbits & Orbitals - Get Clarified Here
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Dirac Principle Value Identity applied to Propagators
  • · Replies 3 ·
Replies
3
Views
3K