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 Universal quantum physics
Undergrad Help with partition function calculation
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Does quantum physics predict all isotope decays
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Decoherence of measurement outcomes
  • · Replies 2 ·
Replies
2
Views
1K
High School Subatomic particles and the observer
  • · Replies 32 ·
2
Replies
32
Views
6K
Undergrad Stefan-Bolzmann law in n-dimensions, what is wrong
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Generalizing the Bell Inequality for Arbitrary Measurement Axes
  • · Replies 1 ·
Replies
1
Views
2K
High School A view of the double-slit experiment
  • · Replies 58 ·
2
Replies
58
Views
10K
High School CDP: Non Classical Correlations at Spacelike Separation
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Qualitative plots of harmonic oscillator wave function
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Does measuring an atom collapse the wavefunction of its parts?
  • · Replies 6 ·
Replies
6
Views
2K
High School Quantum entanglement and special relativity
  • · Replies 9 ·
Replies
9
Views
2K
High School The HUP in absence of observers
  • · Replies 4 ·
Replies
4
Views
1K
High School A couple of questions about photons and superposition..
  • · Replies 6 ·
Replies
6
Views
2K
High School What is the minimum voltage required to get characteristic spectrum
  • · Replies 2 ·
Replies
2
Views
2K
High School Electron Gun for a Grade 9 Physics Project?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Electrons Emitting Photons And Ambient Light
  • · Replies 7 ·
Replies
7
Views
2K
High School Is quantum physics "retro-deterministic"?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Is the Born Rule Justifiable in Particle Detection?
  • · Replies 26 ·
Replies
26
Views
4K
High School Can a Particle Near a Black Hole Eliminate String Vibration?
  • · Replies 2 ·
Replies
2
Views
1K
High School Semiconductor's sensistivity to light
  • · Replies 3 ·
Replies
3
Views
1K
Undergrad Measurement Problems in Quantum Mechanics: Wave/Particle Duality
  • · Replies 12 ·
Replies
12
Views
2K
Graduate Is Mutation related to quantum jump?
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Ring or the shell in Bremsstrahlung?
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Proof of Kaku (8.18): Completing the Square and Using Spiegel's Result
  • · Replies 12 ·
Replies
12
Views
3K
High School Why 50% of entangled photons pass through the polarizer?
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Anyone here study quantum mechanics for fun?
  • · Replies 25 ·
Replies
25
Views
5K
Undergrad What were Newton's thoughts on non-locality?
  • · Replies 51 ·
2
Replies
51
Views
6K
High School What is the underlying reason for stimulated emission?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How is the von Klitzing constant used to measure resistance?
  • · Replies 2 ·
Replies
2
Views
2K
High School What does the 'space' inside an atom consist of?
  • · Replies 23 ·
Replies
23
Views
5K
Undergrad Probabilities Associated with Sudden Changes in Potential
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Do these Bell inequalities rely on probability concept?
  • · Replies 13 ·
Replies
13
Views
2K
Undergrad How the probability amplitude is estimated in practice
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How to relate the expansion term to Feynman diagrams
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Superposition of particle identities
  • · Replies 8 ·
Replies
8
Views
1K
High School Single photons and expanding spheres of light
  • · Replies 20 ·
Replies
20
Views
3K
Undergrad Path Integrals in Quantum Theory
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What basically is Klein tunneling ?
  • · Replies 3 ·
Replies
3
Views
2K
High School Does Observing an Entangled Particle Affect Its Superposition?
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Measurement of the mean value of the number of photons?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad When Should the Bohr Atom Behave Classically?
  • · Replies 3 ·
Replies
3
Views
1K
High School Exactly why FTLC is impossible with entangled photons?
  • · Replies 40 ·
2
Replies
40
Views
5K
Graduate Why Do Feynman Rules Successfully Model Particle Interactions?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad A computational model of Bell correlations
  • · Replies 76 ·
3
Replies
76
Views
8K
Undergrad QM Orthogonality: Separate & Independent Eigenvalues?
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Symmetric and Antisymmetric Wavefunction
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Stochastic signal analysis in QM
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Baryon asymmetry of the universe
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Randomness of quantum mechanics and Pi
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Nonlinear Schrodinger equation and linearity of Q.M.
  • · Replies 3 ·
Replies
3
Views
1K
High School Probability of a photon passing through a filter
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Observing Electrons: The Measuring Device & Its Name
  • · Replies 2 ·
Replies
2
Views
1K
Graduate What are the real-world benefits of quantum computers and how do they work?
  • · Replies 33 ·
2
Replies
33
Views
5K
Undergrad Photon & Electron: Photoelectric & Compton Effects
  • · Replies 30 ·
2
Replies
30
Views
3K
Undergrad Measurement effect ('collapse') question
  • · Replies 8 ·
Replies
8
Views
2K
Graduate On tempered distributions and wavefunctions
  • · Replies 5 ·
Replies
5
Views
1K
Graduate Coulomb Klein Gordon: Where does e^(-iEt) come from?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Can Photons from Distant Quasars Decay into Particle Pairs in Vacuum?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Building intuition for Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Bohr's complementarity is completed with entanglement?
  • · Replies 22 ·
Replies
22
Views
4K
Undergrad What is the origin of quantization?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Generalized free fields as dark matter?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad I want to read about the electron nucleus interaction
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad In quantum statistics, inhibition/enhancement factors
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad How a group of nucleus can act as a circular aperture
  • · Replies 1 ·
Replies
1
Views
1K
High School Why do scientists claim that there's true randomness?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad "Derivation" of the Schrödinger Equation
  • · Replies 4 ·
Replies
4
Views
1K
Undergrad Interference of a single photon in an interferometer
  • · Replies 26 ·
Replies
26
Views
5K
Graduate Is the Inverse Momentum Operator an Essential Tool in Quantum Mechanics?
  • · Replies 12 ·
Replies
12
Views
5K
Undergrad Definition of "info" as it pertains to string theory
  • · Replies 1 ·
Replies
1
Views
987
Undergrad The inequality in the Heisenberg uncertainty relation
  • · Replies 6 ·
Replies
6
Views
1K
Undergrad Infinite or undefined standard deviation in HUP
  • · Replies 6 ·
Replies
6
Views
1K
High School The Impact and Relevance of Quantum Mechanics: An Interview with an Expert
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Particle moving on a constrained path
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Determining the accuracy of the Variational Method
  • · Replies 1 ·
Replies
1
Views
1K
High School Relation between spin and symmetry of wave function
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad State Vectors vs. Wavefunctions
  • · Replies 32 ·
2
Replies
32
Views
4K
Undergrad Require a source for a delocated photon pair
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Quantum Field Configurations and Wavefunctions
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Work Out Number of Photons in Vacuum
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad How does the thickness of a beam splitter affect the phase shift produced?
  • · Replies 4 ·
Replies
4
Views
4K
High School Understanding Causality in Quantum Mechanics
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Why is there an arrow mediating a process in a Feynman diagram?
  • · Replies 8 ·
Replies
8
Views
2K
Undergrad Normalization and the probability amplitude
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Use the Dirac Equation to calculate transition frequencies in Hydrogen
  • · Replies 13 ·
Replies
13
Views
3K
Undergrad What is the Electromagnetic Wave in this Animation?
  • · Replies 6 ·
Replies
6
Views
2K
High School Understanding the Limits of Measurement in Quantum Mechanics
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Successive iteration problem in quantum dissipation article
  • · Replies 19 ·
Replies
19
Views
2K
Undergrad The 6th Spectral Series: Wavelength & EM Spectrum
  • · Replies 11 ·
Replies
11
Views
2K
High School How do the group and phase velocities of pilot waves compare?
  • · Replies 17 ·
Replies
17
Views
3K
Undergrad Representations in Quantum Physics
  • · Replies 15 ·
Replies
15
Views
3K
Graduate Quantum field theory, spacetime, and coordinates
  • · Replies 60 ·
3
Replies
60
Views
5K
Undergrad Why “If Lz has a well-defined value, then Lx and Ly do not”？
  • · Replies 6 ·
Replies
6
Views
3K
High School Planck level effects of virtual particles
  • · Replies 17 ·
Replies
17
Views
2K
Undergrad Can someone please explain quantum entanglement to me?
  • · Replies 14 ·
Replies
14
Views
2K
Undergrad Can matter come into existence in empty space?
  • · Replies 5 ·
Replies
5
Views
1K
Undergrad Is this a mistake in Weinberg's book?
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Entanglement: which properties are entangled?
  • · Replies 23 ·
Replies
23
Views
3K
Graduate Field quantization and photon number operator
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad A proposed experiment to test quantum gravity
  • · Replies 12 ·
Replies
12
Views
4K