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.

Sub-forums

Quantum Interpretations and Foundations

Particle vs Wave Interpretations of QM
1.3K threads
Undergrad Particle vs Wave Interpretations of QM
Graduate Quantum Chaos: Expert Discussion and Q&A
  • MathematicalPhysicist
  • · Replies 26 ·
Replies
26
Undergrad What is the significance of the dispersion relation?
  • patric44
  • · Replies 5 ·
Replies
5
Undergrad Normalization of an Eigenvector in a Matrix
  • Dwye
  • · Replies 3 ·
Replies
3
High School Spin collapse in a magnetic field
  • msumm21
  • · Replies 17 ·
Replies
17
Undergrad Free electron path without a nearby proton
  • Tareq Naushad
  • · Replies 3 ·
Replies
3
Undergrad What does it mean for spins to be anti-phase with each other?
  • docnet
  • · Replies 6 ·
Replies
6
Undergrad Can a quantum system with internal memory be in an energy eigenstate?
  • mephistomunchen
  • · Replies 13 ·
Replies
13
High School Understanding the Interactions of Energy with Quantum Particles and Strings
  • prax
  • · Replies 10 ·
Replies
10
Graduate Renormalizability conditions for a real scalar field in d dimensions
  • JD_PM
  • · Replies 2 ·
Replies
2
Undergrad "Filming" a quantum measurement
  • nomadreid
  • · Replies 65 ·
3
Replies
65
Graduate Dimension of \lambda constant in \delta potential
  • LagrangeEuler
  • · Replies 2 ·
Replies
2
Undergrad An Alternative form of Bell's Inequality
  • jambaugh
  • · Replies 5 ·
Replies
5
Undergrad How does a particle's acceleration relate to the emitted photon?
  • jactor
  • · Replies 13 ·
Replies
13
High School Wave Function Collapse using faulty recording devices.
  • Lexovix
  • · Replies 7 ·
Replies
7
Undergrad Is the change in energy due to light-shift the same in all levels?
  • ErezAgh
  • · Replies 4 ·
Replies
4
Undergrad Question on circular polarization and the quantum eraser
  • Erik Ayer
  • · Replies 8 ·
Replies
8
Undergrad Understanding Measurement Probability in Electron Spin: Explained by Susskind
  • rasp
  • · Replies 48 ·
2
Replies
48
Undergrad Calc QED Charge Particle Repulsion/Attraction
  • ILoveParticlePhysics
  • · Replies 7 ·
Replies
7
Undergrad Are entangled particles really separated?
  • chrisrp
  • · Replies 23 ·
Replies
23
Undergrad Question on Harmonic Oscillator Series Derivation
  • TRB8985
  • · Replies 1 ·
Replies
1
High School Traveling wave solution notation
  • baseballfan_ny
  • · Replies 4 ·
Replies
4
Undergrad Quantum Tunneling in an STM: ELI5 Requested
  • Jackissimus
  • · Replies 3 ·
Replies
3
Undergrad Spontaneous parametric down-conversion entanglement using BBO
  • Paul159
  • · Replies 4 ·
Replies
4
High School Are photons entangled with a component of the atom that emitted them?
  • Matthew-Champion
  • · Replies 3 ·
Replies
3
High School Quantum info and its indestructability
  • sayetsu
  • · Replies 12 ·
Replies
12
High School Understanding Circumflex Operators: Get Help Now
  • regory
  • · Replies 5 ·
Replies
5
Undergrad Relation between blackbody radiation and spontaneous emission
  • IcedCoffee
  • · Replies 6 ·
Replies
6
Undergrad Constructive Interference of Light
  • jactor
  • · Replies 15 ·
Replies
15
Undergrad Do Interacting Bosons with Spin 2 Exist for Gluon-like Charges?
  • reinhard55
  • · Replies 5 ·
Replies
5
Undergrad Rabi Hamiltonian : counter-rotating terms
  • Paul159
  • · Replies 2 ·
Replies
2
Graduate The exciton dynamics in the FMO complex
  • Ayoub EL-AMRANI
  • · Replies 2 ·
Replies
2
Graduate Non-perturbative description of QFTs
  • dx
  • · Replies 6 ·
Replies
6
Undergrad Experimental realizatoin of sequential Stern-Gerlach's
  • nicholas_eng
  • · Replies 4 ·
Replies
4
Undergrad Functor between the category of Hilbert Space and the category of sets
  • snypehype46
  • · Replies 3 ·
Replies
3
High School Question about this equation for the expectation value
  • docnet
  • · Replies 3 ·
Replies
3
Undergrad Explaining the Bloch-Siegert Shift - A Beginner's Guide
  • Malamala
  • · Replies 3 ·
Replies
3
Undergrad Understanding how to derive the Feynman rules out of the path integral
  • JD_PM
  • · Replies 33 ·
2
Replies
33
Graduate How can a mixed state particle absorb a "quanta" of energy?
  • ForgetfulPhysicist
  • · Replies 8 ·
Replies
8
Graduate Is there a symmetry in the Unruh effect?
  • Heidi
  • · Replies 23 ·
Replies
23
Undergrad To understand Bell's inequality
  • mananvp
  • · Replies 15 ·
Replies
15
High School How does a photon not "feel" electromagnetism?
  • Marshall2389
  • · Replies 19 ·
Replies
19
Undergrad Bell's Inequality => 4 entangled Photons impossible?
  • ObjectivelyRational
  • · Replies 1 ·
Replies
1
Undergrad Dimensionless vs. dimensional "constants"
  • valenumr
  • · Replies 20 ·
Replies
20
Undergrad How to work in the |F,m_F> states in hyperfine structure
  • lelouch_v1
  • · Replies 3 ·
Replies
3
Graduate Question about plabic graphs in the amplituhedron approach
  • nrqed
  • · Replies 5 ·
Replies
5
Undergrad Physical parameters for spin 1/2 particles
  • lazayama
  • · Replies 5 ·
Replies
5
Undergrad Issue with wavenumber in the free particle wavefunction
  • shankk
  • · Replies 9 ·
Replies
9
Undergrad Simultaneous measurements of 1 observable
  • Ghost Quartz
  • · Replies 2 ·
Replies
2
Graduate Eigenvalues of Hyperfine Hamiltonian
  • lelouch_v1
  • · Replies 1 ·
Replies
1
Undergrad Is the classical relation between energy and momentum valid in QM?
  • shankk
  • · Replies 4 ·
Replies
4
Undergrad Different reference frames in QM
  • BillKet
  • · Replies 10 ·
Replies
10
Undergrad The Central Field Approximation for Many-Electron Atoms
  • rtareen
  • · Replies 4 ·
Replies
4
Undergrad Does the wave function spread more quickly after it is observed?
  • Sciencemaster
  • · Replies 32 ·
2
Replies
32
Graduate Wave Function Collapse and Thermodynamic Irreversible Processes
  • hyksos
  • · Replies 4 ·
Replies
4
Undergrad Classical Hayden-Preskill Randomizer
  • vancouver_water
  • · Replies 1 ·
Replies
1
Undergrad Angular Momentum Hydrogen Atom Problem: Physically Explained When L=0
  • LagrangeEuler
  • · Replies 2 ·
Replies
2
Graduate Heisenberg Uncertainty Relation for mixed states
  • Jamister
  • · Replies 6 ·
Replies
6
Undergrad General Magnetic Dipole Moment For an Electron in an Atom
  • rtareen
  • · Replies 10 ·
Replies
10
High School Beginner Question Regarding Entanglement
  • Egghead44
  • · Replies 19 ·
Replies
19
Graduate Proton Precession in Hydrogen-Rich Liquids
  • Anil Iype
  • · Replies 3 ·
Replies
3
Undergrad Can two photons cancel each other?
  • QuasarBoy543298
  • · Replies 11 ·
Replies
11
High School How Does the Observer Paradox in Anthropology Reflect on Cultural Understanding?
  • bertrandrussell
  • · Replies 27 ·
Replies
27
Undergrad Understanding Covalent Bonds: The Stability of Matter Explained
  • EPR
  • · Replies 8 ·
Replies
8
High School Photon absorption -- What happens to the excess energy?
  • jeremyfiennes
  • · Replies 12 ·
Replies
12
Undergrad Solving Schrödinger's equation for a hydrogen atom with Euler's method
  • Tuca
  • · Replies 2 ·
Replies
2
Undergrad Photon Emitted without Changing Energy Levels
  • rtareen
  • · Replies 8 ·
Replies
8
Undergrad Possible to derive geodesics from the wavefunction?
  • Gotbread
  • · Replies 1 ·
Replies
1
Graduate Why physicists cannot renormalize all divergent integrals?
  • Anixx
  • · Replies 8 ·
Replies
8
High School Does the energy of an electron vary in the sublevels?
  • AdvaitDhingra
  • · Replies 10 ·
Replies
10
Undergrad Intuitive/classical picture of electron spin g-factor of 2?
  • AndreasC
  • · Replies 5 ·
Replies
5
Undergrad 1D wavepacket scattering simulation, momentum distribution formula
  • LucKy
  • · Replies 24 ·
Replies
24
High School Is there a magnetic interaction between light and charged particles?
  • jeremyfiennes
  • · Replies 23 ·
Replies
23
High School The match rates in Bell Tests -- Lower than 50%?
  • Cerenkov
  • · Replies 28 ·
Replies
28
High School Question about QM and Neuroscience
  • Unbowed_epicure
  • · Replies 4 ·
Replies
4
Undergrad Block Time & Action at a Distance
  • InterestedParty
  • · Replies 11 ·
Replies
11
Undergrad QED - running of coupling (beta function)
  • tomdodd4598
  • · Replies 5 ·
Replies
5
Undergrad Understanding the Effects of Parities on the Stark Hamiltonian
  • kelly0303
  • · Replies 1 ·
Replies
1
Graduate How Do Feynman Diagrams Work in Phi^4 Theory?
  • Diracobama2181
  • · Replies 1 ·
Replies
1
Undergrad Constant beam, both slits analyzed double-slit experiment?
  • Kurt Mueller
  • · Replies 6 ·
Replies
6
High School Does Quantum Eraser Prove That Intention Does Not Create Physical Reality?
  • lashinko
  • · Replies 8 ·
Replies
8
Undergrad Renormalisation scale and running of the φ^3 coupling constant
  • tomdodd4598
  • · Replies 1 ·
Replies
1
Undergrad Shankar Quantum Mechanics, Chapter 5, Page 160-161
  • DaddyGriffiths
  • · Replies 2 ·
Replies
2
High School Translating Stephen Hawking: Plus/Minus Term & Black Holes
  • Nuno_S_Oliveira
  • · Replies 2 ·
Replies
2
Undergrad Is there any physical significance to Wave Amplitude?
  • reis1212
  • · Replies 6 ·
Replies
6
Undergrad After entanglement swapping, how can we verify the new entanglement?
  • r20
  • · Replies 5 ·
Replies
5
Undergrad What is CV Bell State Measurement and How Does Entanglement Swapping Work?
  • James2018
  • · Replies 2 ·
Replies
2
Undergrad Is there a smallest wavetrain corresponding with photons?
  • fxdung
  • · Replies 30 ·
2
Replies
30
Undergrad Green's function for massive photon theory
  • JD_PM
  • · Replies 3 ·
Replies
3
Undergrad The Speed of Light: Comparing Photon and EM Wave Velocities
  • fxdung
  • · Replies 6 ·
Replies
6
High School Theory about gravitons and space warping
  • CallMeDirac
  • · Replies 11 ·
Replies
11
Undergrad The time evolution of a Hamiltonian
  • Llukis
  • · Replies 12 ·
Replies
12
Undergrad Discrete symmetries and conserved quantities
  • dRic2
  • · Replies 5 ·
Replies
5
Undergrad Quantum Entanglement with Public Variables
  • mplummer
  • · Replies 11 ·
Replies
11
Undergrad Coherent state evolution - nonlinear Hamiltonian
  • CptXray
  • · Replies 1 ·
Replies
1
Graduate Entanglement Witnesses close to GHZ states
  • Danny Boy
  • · Replies 1 ·
Replies
1
Undergrad The spin of quarks in an H dibaryon
  • Keru
  • · Replies 2 ·
Replies
2
Undergrad Some questions about the photoelectric experiment
  • rtareen
  • · Replies 13 ·
Replies
13
Undergrad Explaining the Continuous Diffraction Spectrum of a Heated Solid
  • rtareen
  • · Replies 2 ·
Replies
2
Undergrad Change of variables in the Density of States function
  • AndersF
  • · Replies 2 ·
Replies
2
Undergrad Qualitative description of stimulated emission & population inversion
  • rtareen
  • · Replies 18 ·
Replies
18