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.
Threads
Graduate What's the problem with (non-causal) nonlocality?
- greypilgrim
- · Replies 14 ·
Graduate Integral kernel in vacuum wave functional
- ShayanJ
- · Replies 6 ·
Graduate Double slit experiment: setup questions when firing one particle at a time
- bugatti79
- · Replies 20 ·
Graduate SU(N) symmetry breaking by non-trivial parity.
- askalot
- · Replies 8 ·
Graduate Reduced Density Matrix Entropy in 1D Spin Chain
- JorisL
- · Replies 3 ·
Graduate Shrodinger's cat is "invisible"
- Justice Hunter
- · Replies 25 ·
Undergrad Zero Potential Level: Excited State or Not?
- Samurai44
- · Replies 2 ·
Graduate Can Quantum Mechanics Have 'Elegant' Trajectories in Hilbert Space?
- Logic Cloud
- · Replies 3 ·
Graduate Quantum entanglement on a cosmological scale?
- tom aaron
- · Replies 14 ·
Graduate Photon emission from dipole antenna
- Danyon
- · Replies 2 ·
Graduate How/why decoherence rather than how/why coherence
- Gerinski
- · Replies 2 ·
Graduate Books on quantum mechanics with intuition
- Joker93
- · Replies 8 ·
Graduate Quantum Mechanics and Group Theory questions
- Nomajere
- · Replies 2 ·
Undergrad Why are s-orbitals spherical if electrons repel each other?
- Misha Kuznetsov
- · Replies 10 ·
Graduate Classical versus quantum momentum
- DiracPool
- · Replies 10 ·
Graduate Dirac Hydrogen Atom: Parity and Odd-Operator
- ChrisVer
- · Replies 3 ·
Graduate Shouldn't a metal at 0K emit electromagnetic radiation?
- voila
- · Replies 7 ·
Graduate The quantum number n and its restrictions
- pondzo
- · Replies 3 ·
Graduate Single particle double slit interference simulation
- jerromyjon
- · Replies 1 ·
Graduate Calculate Eigen Function of 3D Potential Box w/ Doubled X Side
- SANKET HAQUE
- · Replies 1 ·
Graduate Is a photon of dimension zero?
- Nemoto
- · Replies 20 ·
Graduate Expected result of such an experiment?
- LsT
- · Replies 16 ·
Graduate Why does a metal mirror preserve interference without decoherence?
- Swamp Thing
- · Replies 16 ·
Graduate How can you actually measure the electron position?
- Tomishiyo
- · Replies 13 ·
Graduate Energy of the electron in a random hydrogen atom
- ftr
- · Replies 12 ·
Graduate Radiative heat transfer in multi-component media
- vassos
- · Replies 2 ·
Graduate Can all classical fields be quantized at the Planck scale?
- Isaac0427
- · Replies 1 ·
Graduate QED vacuum and Lorentz invariance
- TrickyDicky
- · Replies 19 ·
Insights How to Stop an Electron from Falling into a Proton - Comments
- edguy99
- · Replies 11 ·
Graduate Identical Particles in Ballentine's Book
- blue_leaf77
- · Replies 14 ·
Graduate Units of Wave function (Schrodinger equation)
- Avatrin
- · Replies 4 ·
Graduate L² and Lz matrices for l=2 and adding angular momentum vectors
- dyn
- · Replies 5 ·
Graduate Understanding ultraviolet catastrophe
- Absentee
- · Replies 10 ·
Graduate How Do Qubits and Multiple Qubit Systems Enhance Computing Power?
- Erwin
- · Replies 4 ·
Graduate Under what conditions is a photon a particle?
- jimmylegss
- · Replies 1 ·
Graduate Can Virtual Particles Be Observed in Experiments?
- alex7773
- · Replies 2 ·
Graduate Where is the flaw with predetermined entanglement state?
- LsT
- · Replies 98 ·
Graduate How to calculate density matrix for the GHZ state
- Agrippa
- · Replies 6 ·
Graduate Even and odd molecular orbitals under reflection in diatomic molecules
- moriheru
- · Replies 1 ·
Undergrad Why Does Light Exhibit Both Particle and Wave Properties?
- Swetha.M.L
- · Replies 40 ·
Graduate What do we mean by Classical Simulation of Quantum Algorithm
- JK423
- · Replies 2 ·
High School What is the difference between simple harmonic wave and stationary wave?
- akashpandey
- · Replies 5 ·
Graduate Why can the perturbed state be expanded in unperturbed eigenbasis?
- Runei
- · Replies 2 ·
Graduate Question regarding the double slit experiment
- drawkcab
- · Replies 7 ·
Graduate Ballistic conduction and Superconductivity
- NewtonApple
- · Replies 4 ·
Graduate Why does the tensor product sum A⊗1+1⊗B equal its spectrum?
- jk22
- · Replies 3 ·
Graduate Measurement of a Hydrogen qubit?
- Julian Blair
- · Replies 3 ·
Graduate Green's Functions and Feynman Diagrams
- rolotomassi
- · Replies 3 ·
Graduate Spin 1/2 - Is √3/2ħ or √¾ħ Correct?
- Isaac0427
- · Replies 2 ·
Graduate What is the point to study Anti-bunching?
- Lizzie Mann
- · Replies 1 ·
Graduate Difference between Griffiths and Shankar uncertainty principle equations
- Zerkor
- · Replies 6 ·
Graduate Preparing a mixture of two spatially separated gaussian wavefunctions
- Swamp Thing
- · Replies 3 ·
Graduate Physics behind the annihilator-creator operator formula
- Lizzie Mann
- · Replies 2 ·
Graduate Scattering amplitude, link between quantum mechanics and QFT
- Kurret
- · Replies 1 ·
Graduate Ammonia molecule geometry and radiation
- forcefield
- · Replies 5 ·
Graduate Observer Big Bang? How come electrons have a wave nowadays?
- slitted
- · Replies 7 ·
Graduate Why does transmission depend on mass for barriers but not steps?
- Cluemore
- · Replies 4 ·
Graduate Single photon double slit, reset detector after each impact
- UfoOvni
- · Replies 35 ·
Graduate Can measurement order affect entangled electron properties across Earth-Moon distance?
- billllib
- · Replies 11 ·
Graduate Hiding the observer with gravitational measurements?
- slitted
- · Replies 6 ·
Graduate What Algorithms Extract Information from Quantum Eigenvalues?
- ephen wilb
- · Replies 15 ·
Graduate Dispersion relation for non-relativistic quantum particles
- dilloncyh
- · Replies 1 ·
Graduate Hanbury Brown and Twiss effect question
- LmdL
- · Replies 54 ·
Graduate Are discrete particles and fields both present in Quantum Mechanics?
- Pjpic
- · Replies 1 ·
Graduate More evidence that the wavefunction is ontologically real?
- Quantumental
- · Replies 71 ·
Graduate Can we model classical world using quantum laws?
- zonde
- · Replies 9 ·
Graduate Does the delayed choice quantum eraser vindicate von Neumann's collapse theory?
- Megatherion
- · Replies 44 ·
Insights Why Renormalisation Needs a Cutoff - Comments
- bhobba
- · Replies 29 ·
Graduate Give mass to a massless scalar field in 1+1, Higgs like?
- Spinnor
- · Replies 2 ·
Graduate Good Books on Quantum Computing and Quantum Mechanics
- fmpak93
- · Replies 1 ·
Graduate Are we wrong to try and unify quantum mechanics and relativity?
- gerbilmore
- · Replies 118 ·
Graduate Performing integration over field variable
- aaaa202
- · Replies 1 ·
Graduate Do Virtual Particles Cause The Wave Function To Collapse?
- Ryan-Duddy
- · Replies 2 ·
Graduate Cohen-Tannoudji on mutually exclusive (?) events
- terra
- · Replies 2 ·
Graduate Why Are Swap Gates Used in Quantum Fourier Transform Circuits?
- jimmycricket
- · Replies 4 ·
Graduate Why Quantum Mechanics is Complex
- Zerkor
- · Replies 10 ·
Graduate About role of Planck constant in classical physics
- KFC
- · Replies 7 ·
Graduate Does a vector operator require the total angular momentum in its commutation relation?
- blue_leaf77
- · Replies 3 ·
Graduate Completeness for a single particle
- jk22
- · Replies 3 ·
Graduate In-principle existence of which-way info
- Swamp Thing
- · Replies 10 ·
Graduate How do electrons change states on their own?
- ephen wilb
- · Replies 1 ·
Graduate Different classical limits of quantum mechanics
- spaghetti3451
- · Replies 8 ·
Graduate Is it Valid to Treat a Solid as a Large Molecule in Calculating Specific Heat?
- A_s_a_d
- · Replies 2 ·
Graduate Why do collapse functions change form in master equations?
- Agrippa
- · Replies 1 ·
Graduate Potential energy term in Schrodinger's equation?
- iScience
- · Replies 2 ·
Graduate What gives electrons and protons their electric charge?
- driftwood
- · Replies 17 ·
Graduate Suggested topics for a beginner in QP? What got you hooked?
- DastardlyBliss
- · Replies 6 ·
Graduate Mathematical conundrum when adding complex exponentials
- Runei
- · Replies 3 ·
Graduate What Are Incomplete Collapses and Tails in Objective Collapse Theories?
- ephen wilb
- · Replies 25 ·
Graduate How does the Pauli exclusion principle apply to protons?
- Lance Fernandes
- · Replies 1 ·
Graduate What does it mean to measure a qubit in a different basis?
- Ananthan9470
- · Replies 5 ·
Undergrad What is the difference between a vector and a vector space?
- MNskating
- · Replies 4 ·
Graduate KE operator and eigenfunctions
- dyn
- · Replies 16 ·
Graduate Understanding Quantum Eraser Experiments
- alexepascual
- · Replies 35 ·
Graduate A thought experiment of wavefunction collapse
- backward
- · Replies 9 ·
Graduate Current conservation beta function
- WannabeNewton
- · Replies 2 ·
Graduate Can a pilot wave be instantaneous?
- Terry M
- · Replies 4 ·
Graduate Why does anomaly mean symmetry is broken?
- fxdung
- · Replies 12 ·
Graduate Quantum Suicide: Why is only experimenter convinced?
- greypilgrim
- · Replies 57 ·
Graduate Feynman rules for nonlinear sigma models
- hyperkahler
- · Replies 1 ·