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
Threads
Undergrad Nature of Photons: EM Wavelengths & Speed
- .Q.
- · Replies 5 ·
Graduate There is no such thing as 'collapse of the wavefunction' - Feynman
- dx
- · Replies 42 ·
Undergrad Absorption & Emission: What Causes Electrons to Excite?
- Infrasound
- · Replies 9 ·
Graduate Superconductivity and Pauli exclusion principle
- haael
- · Replies 7 ·
Graduate DBB: Question about Preferred Variable
- VinGwurf
- · Replies 17 ·
Graduate Norm Ordering for a many electron system
- janakiraman
- · Replies 2 ·
Graduate Standard Model Completely Wrong
- curiousphoton
- · Replies 1 ·
Graduate Anyone solved eigenstates in the field of a magnetic monopole?
- wdlang
- · Replies 2 ·
Graduate Spin State Rotation: Understanding Negative Probability?
- eoghan
- · Replies 1 ·
Graduate Double Slit Experiment: Why Isn't Wave Function Collapsed?
- rabbitrabbit
- · Replies 8 ·
Graduate Is the Total Momentum in QED Actually Total Angular Momentum?
- AJ Bentley
- · Replies 3 ·
Graduate QFT Counter Terms example calculation?
- Phymath
- · Replies 16 ·
Graduate Why two s=1/2 states can be linked by a rotation, but not two s=1 states?
- wdlang
- · Replies 45 ·
Graduate Microcanonical ensemble, density operator
- Derivator
- · Replies 6 ·
Graduate QM vs. the second law of thermodynamics
- zhermes
- · Replies 1 ·
High School Max # of electrons in an orbit
- discord73
- · Replies 2 ·
Graduate Distinguishing Two Experiments With Equal Density Matrices
- kof9595995
- · Replies 3 ·
Graduate The old problem of the virtual particles
- the one
- · Replies 5 ·
Graduate The stability of the hydrogen atom
- eoghan
- · Replies 16 ·
Graduate Light & Electron Wave-Particle Duality
- ganypots
- · Replies 1 ·
Undergrad Why particle in a box is considered as 1-dimensional ?
- dying_star
- · Replies 5 ·
Graduate Phase, Geodesics, and Space-Time Curvature
- jfy4
- · Replies 1 ·
Graduate Discrete vs continuous eigenvalues
- pellman
- · Replies 4 ·
Graduate Harmonic oscillator phase space integral
- Evertje
- · Replies 2 ·
High School Meaning of frequency and wavelength of photon
- amaresh92
- · Replies 1 ·
Graduate Trace of the fundamental commutation relation
- daudaudaudau
- · Replies 4 ·
Graduate Why is the graviton non-renormalizable?
- cuallito
- · Replies 1 ·
Graduate How Does Time Ordering Work in Quantum Mechanics?
- limarodessa
- · Replies 3 ·
Graduate Why is indeterminism assummed popular ?
- Ushtabalakh
- · Replies 3 ·
Graduate Is liquid helium composed of both ortho and para-helium?
- Creator
- · Replies 6 ·
Graduate The Controversy Surrounding Bell's Theorems and Local Realism
- mjpam
- · Replies 19 ·
Graduate How Are Spin 1 Particles Represented in Quantum Mechanics?
- Simp
- · Replies 3 ·
Graduate Can Extra Dimensions in String Theory Be Smaller Than a Planck Length?
- ThomasEdison
- · Replies 8 ·
Graduate Understanding Photon Spin: Debunking Common Misconceptions
- cragar
- · Replies 2 ·
Graduate Extracting an answer from a quantum computer
- quasi_Phthalo
- · Replies 1 ·
Graduate Quantum effects at the neurological level
- rasp
- · Replies 62 ·
Graduate Do Fermionic Creation and Annihilation Operators Commute?
- Niles
- · Replies 2 ·
Graduate Problem with anticommutation of spinors
- ansgar
- · Replies 1 ·
Graduate Is fractional orbital momentum theoretically possible?
- haael
- · Replies 5 ·
Graduate Understanding Momentum Eigenfunctions in Quantum Mechanics
- snoopies622
- · Replies 50 ·
Graduate Can Quaternions Revolutionize Quantum Mechanics?
- Karl G.
- · Replies 15 ·
Graduate QFT Basics: What Does "Ad" Mean in Zeidler's Proofs?
- Jimmy Snyder
- · Replies 5 ·
Graduate Visualization of electron spin
- zonde
- · Replies 2 ·
Graduate What is phase from a QM standpoint?
- Glen Bartusch
- · Replies 5 ·
Graduate Wave-partical duality and Huygens–Fresnel principle
- howaboutthis
- · Replies 1 ·
Graduate What happens when light is brought to an absolute stop?
- polaris12
- · Replies 8 ·
Graduate Understanding LQG: Adding and Multiplying in Spin Networks
- naima
- · Replies 2 ·
Graduate The nature of the magnetic field.
- peron
- · Replies 12 ·
Graduate If virtual particles can appear, can real particles disappear?
- jraj
- · Replies 3 ·
Graduate Quantum Wave Function: Infinite Sheet of Charge & Pinhole
- GRDixon
- · Replies 2 ·
Graduate What is the Classical Connection to QM Spin?
- da_willem
- · Replies 16 ·
Graduate Quantum logic and hypercomplex numbers
- fundamentally
- · Replies 1 ·
Graduate Variation of simple Lagrangian
- bndnchrs
- · Replies 1 ·
Graduate Stationary States and Spreading of Wave Function
- boderam
- · Replies 3 ·
Graduate Velocity of Particles in Quantum Mechanics: Momentum & Computing Mean Values
- paweld
- · Replies 6 ·
Graduate List of Electron Double Slit Experiments?
- epicurean
- · Replies 18 ·
Graduate How is Hamiltonian energy of orbital differ from orbital in certain
- boodyx1
- · Replies 2 ·
Graduate Requirements for LR model - please explain.
- ThomasT
- · Replies 1 ·
Graduate Is the constant c (or it's measurement) subject to the uncertainty principle?
- stone1
- · Replies 11 ·
Graduate Is Quantum Teleportation possible without a classical channel?
- wschlanger
- · Replies 2 ·
Graduate Is Feynman's sum-over-histories the key to understanding quantum mechanics?
- idea2000
- · Replies 15 ·
Graduate The Limits of Observation: Can We Collapse Wave Functions with Our Senses?
- RAD4921
- · Replies 24 ·
Graduate Superposition-airy disc-snell's law-qbits.
- Glen Bartusch
- · Replies 4 ·
Graduate Is rotational energy quantized for tiny molecules?
- Archosaur
- · Replies 9 ·
Graduate Understanding Perturbation Theory and Spin in Quantum Mechanics
- 1Kris
- · Replies 5 ·
Graduate Double Slit Experiment & Relativistic Simultaneity
- Boeley
- · Replies 5 ·
Graduate Any good reference on quantum-classical correspondence?
- wdlang
- · Replies 1 ·
Graduate How Do Clebsch-Gordan Coefficients Help in Calculating Eigenvalues of J?
- djeikyb
- · Replies 5 ·
Graduate Do entangled electrons still turn 720 degrees?
- Faradave
- · Replies 16 ·
Graduate QFT Video Lectures with David Tong
- waht
- · Replies 6 ·
Graduate Propagator and delta functions
- jostpuur
- · Replies 10 ·
Graduate Are particles diffraction patterns?
- TCS
- · Replies 4 ·
Graduate Question about spinor wavefunction
- Orion_PKFD
- · Replies 5 ·
Graduate Entangled Particles and Black Holes: A Conundrum of Observation?
- JC99
- · Replies 25 ·
Graduate How Does Wave Function Collapse Relate to the Double Slit Experiment?
- curiousphoton
- · Replies 23 ·
Graduate Re-evolution of wavefunction after collapse
- 01030312
- · Replies 2 ·
Graduate Invariant Lagrangian or action
- Physiana
- · Replies 5 ·
Graduate Boson coherence at high temperatures?
- BkBkBk
- · Replies 5 ·
Graduate Google's most relevant names in Quantum Theory
- unusualname
- · Replies 10 ·
Graduate How Can You Prove No Bound States Exist in a Finite Spherical Well?
- RPI_Quantum
- · Replies 5 ·
Graduate Physicists are enabling increasingly large quantum systems to go into
- marky3
- · Replies 17 ·
Graduate Resolution in scattering experiments
- evilcman
- · Replies 5 ·
Graduate Photons interfering with themselves-double slit experiment
- Strafespar
- · Replies 17 ·
Graduate Is there really matter or just different ways for energy to interact?
- scoobee629
- · Replies 4 ·
Graduate Question about interference by observation (double slit exp.)
- khkwang
- · Replies 1 ·
Graduate Planck and Einstein's theories.
- xxxy
- · Replies 7 ·
Graduate What is the meaning of \frac{1}{A}\left|\phi\rangle in quantum mechanics?
- rgoerke
- · Replies 3 ·
Graduate Quantum Entanglement and time travel
- vincentm
- · Replies 121 ·
Graduate What happens when a photon hits and antiparticle?
- stone1
- · Replies 1 ·
Graduate Eigen Value and Eigen Function
- roshan2004
- · Replies 4 ·
Graduate Spread of Wave Function Under Potential
- boderam
- · Replies 1 ·
Graduate Particle pointing away or from a charge?
- hankaaron
- · Replies 10 ·
Graduate Trying to Understand Bell's reasoning
- billschnieder
- · Replies 110 ·
Graduate Does antimatter have a negative mass
- sshort75
- · Replies 13 ·
Graduate Pauli exclusion principle: a Force or not?
- Zarqon
- · Replies 67 ·
Graduate Is Nature's Preferred Wave Packet Shape Gaussian?
- LarryS
- · Replies 2 ·
Graduate Photon propogator = metric tensor?
- Pengwuino
- · Replies 5 ·
Graduate Question on orthogonal eigenfunctions
- mt8891
- · Replies 1 ·
Graduate VIP experiment explanation needed
- phyfreak
- · Replies 1 ·
Graduate Total mass in the universe = infinite (Dirac Sea calculation)
- LostConjugate
- · Replies 2 ·