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
High School How to increase wave amplitudes
  • · Replies 3 ·
Replies
3
Views
2K
High School What is the result of putting a detector on both slits in the 2 slit experiment?
  • · Replies 26 ·
Replies
26
Views
3K
High School Interference pattern intensity
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Explanation of optical phenomena in light of Feynman's Theory
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Can the Time Independent Schroedinger Equation Be Used to Find Unbound States?
  • · Replies 41 ·
2
Replies
41
Views
6K
High School Uncertainty Principle: Velocity, Position and Energy
  • · Replies 11 ·
Replies
11
Views
2K
Graduate What was so extraordinary about Landau damping?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Are fundamental particles like electrons and protons truly matter waves?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Non-Unitary Dynamics: Is it Allowed?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Projection Postulate vs Quantum Randomness
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Bremmstrahlung in neutral atom collisions
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Complex Numbers in Wave Function: QM Explained
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad How Does Light Emission Affect the Wavefunction of an Atom?
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Do the SU(n) generators represent any observables?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What are some recommended books on non-standard quantum mechanical models?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Disctrete vs continuous spectrum
  • · Replies 18 ·
Replies
18
Views
3K
High School Understanding the Conversion of Energy Forms in Particle Interactions
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Do neutral atom collisions affect the continuous nature of black body radiation?
  • · Replies 4 ·
Replies
4
Views
2K
High School Why do material particles interact?
  • · Replies 4 ·
Replies
4
Views
1K
Graduate Can Quantum Mechanics be Studied in Banach Spaces or Other Non-Hilbert Spaces?
  • · Replies 17 ·
Replies
17
Views
2K
High School Understanding Reflection in Light: Electromagnetic Interactions with Matter
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad What happens when we observe an electron?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Time independence of a Noether charge in QFT?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Identical and indistinguishable particles
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad EM Radiation of "Permanent" Molecular Electric Dipoles
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Higgs field and energy dependence?
  • · Replies 16 ·
Replies
16
Views
2K
High School Question about Unitary Operators and symmetry
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Show that the integral of the Dirac delta function is equal to 1
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Mathematical Quantum Field Theory - Renormalization - Comments
  • · Replies 9 ·
Replies
9
Views
3K
High School Why do photons stimulate emission in atoms?
  • · Replies 20 ·
Replies
20
Views
3K
Undergrad Srednicki QFT Chapter 4 time-evolved operator
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Do Polarized Atoms Imply Shifted Electron Orbitals?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad How to experimentally measure a quantum gate
  • · Replies 1 ·
Replies
1
Views
1K
Graduate What form of the Schrodinger equation do you use for intensity?
  • · Replies 1 ·
Replies
1
Views
946
High School Delayed Choice Quantum Eraser Experiment Results
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Noble Gases vs. Halogens: Which Has a Greater Atomic Radius?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Ground State Energy of a Potential: λ2px2/2m+0.5kx2
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Representing a Hamiltonian in an operator form
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Phase, Bloch sphere versus Feynman path
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Probability of obtaining general quantum measurement outcome
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Can a Pure State be Interpreted as a Mixed State for a Single Particle?
  • · Replies 13 ·
Replies
13
Views
2K
High School Preserving causality in the EPR experiment
  • · Replies 27 ·
Replies
27
Views
3K
Undergrad How Do Oscillations and Interference Define Particles in Quantum Field Theory?
  • · Replies 12 ·
Replies
12
Views
2K
Undergrad Question about the solution to the Harmonic wave equation
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Classical chaos and quantum mechanics
  • · Replies 65 ·
3
Replies
65
Views
9K
Undergrad Question about one-particle states
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad I am interested in Schrodinger equation with tempor. element
  • · Replies 1 ·
Replies
1
Views
969
Graduate Decoherence in the double slit experiment
  • · Replies 33 ·
2
Replies
33
Views
6K
Undergrad Effect of momentum distribution on probability density
  • · Replies 4 ·
Replies
4
Views
2K
Graduate I'm getting the wrong inner product of Fock space
  • · Replies 11 ·
Replies
11
Views
3K
High School (N+1) enhancement of spontaneous emission, why not (N+1/2)
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Entanglement in Ultracold Chemistry and Physics
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Mathematical Quantum Field Theory - Gauge symmetries - Comments
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Velocity dependence of operators in Inonu-Wigner contraction
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad About the strength of a perturbing potential
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Thought experiment about wave functions
  • · Replies 29 ·
Replies
29
Views
3K
Graduate Is [\vec{p}^2, \vec{p} \times \vec{L}] Equal to Zero?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Probabilities for degenerate eigenvalues?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Operator Identity: Quantum Mechanics Explanation w/ References
  • · Replies 7 ·
Replies
7
Views
2K
High School How do you calculate the uncertainty in T using graphs?
  • · Replies 16 ·
Replies
16
Views
3K
Graduate Mathematical Quantum Field Theory - Reduced Phase Space - Comments
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Understanding Dirac Equation Spinor Boosts
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Mathematical Quantum Field Theory - Observables - Comments
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad What Books Explain Quantum Physics Experiments and Interpretations Objectively?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Orbital electrons in stationary states?
  • · Replies 15 ·
Replies
15
Views
4K
High School Quantum Theory and its Precision
  • · Replies 22 ·
Replies
22
Views
5K
Undergrad Why is position-space favored in QM?
  • · Replies 19 ·
Replies
19
Views
3K
Graduate Two-Photon Excitation: Theory and Applications
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Clebsch Gordan coefficients
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What are the limits of the boundaries for the Schrödigner equation
  • · Replies 19 ·
Replies
19
Views
2K
Graduate Can wavepackets be used to solve ODEs in Hilbert spaces?
  • · Replies 5 ·
Replies
5
Views
2K
High School Uncertainty Principle & Non-Commuting Observables
  • · Replies 3 ·
Replies
3
Views
1K
High School Entanglement and pair-production and annihilation
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad A Closer Look at the Randomness of Quantum Measurements in QED
  • · Replies 2 ·
Replies
2
Views
2K
High School Is it time to rebuild quantum theory?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Understanding Spin States in Hilbert Space
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Should the energy density of the vacuum be zero?
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Is Bell's Theorem Inconsistent with Quantum Mechanics?
  • · Replies 55 ·
2
Replies
55
Views
8K
Graduate Implementing Higher Degrees of Freedom
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Time Delay on Multiple Photons when travelling from one plac
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Spin confusion: Stern-Gerlach experiment
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Qubit error rate of QKD BB84 protocol
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Law of transformation of vectors due to rotations
  • · Replies 5 ·
Replies
5
Views
2K
Graduate About nonhermiticity in plasmonic dimers
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How to calculate the photons/pulse of Laser diode?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate What is the Wavelength of the Pilot Wave in the Pilot Wave Theory?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Why does a quantum system with many degrees of freedom imply orthogonality?
  • · Replies 2 ·
Replies
2
Views
2K
High School Understanding Bell’s inequality
  • · Replies 36 ·
2
Replies
36
Views
6K
Undergrad Spin and polarization basis problem?
  • · Replies 22 ·
Replies
22
Views
3K
Undergrad How Does Dirac Notation Simplify Quantum Mechanics for Harmonic Oscillators?
  • · Replies 17 ·
Replies
17
Views
3K
Graduate Quantum measurement operators with Poisson distribution
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad What's the interval between photons in stimulated emission?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Fiber Optics Bandwidth Question
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Rotational Transitions: What Are They?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate How Do Quantum Measurements Impact System Coherence?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Are the energy fluctuations in space real or virtual?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Commutation Relation: Hi Parity Operator?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Von Neumann Entropy of a joint state
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Davison-Germer experiment - Bragg condition
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Coupling constants with fractional dimensions
  • · Replies 2 ·
Replies
2
Views
2K