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 How to couple the angular momenta of a massive particle and a massless one
- kof9595995
- · Replies 6 ·
Graduate Two particles with parallel spins?
- center o bass
- · Replies 1 ·
Undergrad Charge attraction inside an atom
- chaszz
- · Replies 9 ·
Graduate 1D delta funtion potential well
- Nemetz
- · Replies 8 ·
Graduate Half integer orbital momentum, following Griffiths
- Tomer
- · Replies 4 ·
Graduate Confusing step in Sakurai Chapter 1
- gitano
- · Replies 3 ·
Graduate So if spin isn't really spin
- nhmllr
- · Replies 55 ·
Graduate Phenomena only explicable via QM
- mathew3
- · Replies 39 ·
Graduate Proving the Identity to Demonstrating Finite Orthonormal Bases
- franklampard8
- · Replies 3 ·
Graduate Does a photon's amplitude remain constant after emission?
- TGlad
- · Replies 4 ·
Graduate Normalization constant for orbital wave functions
- Kaiten7
- · Replies 2 ·
Graduate Are Real Numbers Limiting Our Understanding of Reality in Theoretical Physics?
- WiFO215
- · Replies 20 ·
Graduate Static Electric Field: Questions on Ionization, Motion & EM Radiation
- azaharak
- · Replies 3 ·
Graduate Position Representation in QFT?
- LarryS
- · Replies 5 ·
Graduate Is the purely wave interpretation really rejected in the 2-slit experiment?
- TrickyDicky
- · Replies 15 ·
Graduate Photon Teleportation: Can it Really Happen?
- Khaled332
- · Replies 1 ·
Professor Balakrishnan's Quantum & Classical Physics Lectures: Worth a Watch!
- alemsalem
- · Replies 6 ·
Graduate Why an electron never falls into a nucleus?
- pergradus
- · Replies 2 ·
Graduate What is the significance of pions as Goldstone bosons in quantum field theory?
- shakespeare86
- · Replies 1 ·
Graduate Alignment of Spin in const magnetic field.
- gispiamp
- · Replies 1 ·
Graduate Basic Question About Quantum Theory
- Thecraziest
- · Replies 5 ·
Graduate How Do Different Dirac Matrix Choices Impact RQM Equations?
- Hymne
- · Replies 1 ·
Graduate Single Photon/Indistinguishabiliity principle experiment
- dmoney123
- · Replies 24 ·
Graduate What Are Good Beginner Books on Quantum Information Theory?
- mateomy
- · Replies 3 ·
Graduate What's the kinetic energy uncertainty for gaussian wave packet?
- AlonsoMcLaren
- · Replies 7 ·
Graduate Polarization 4-vectors to get matrix element in QFT
- jameson2
- · Replies 1 ·
Graduate Why ignore the potential term in the quantum Hamiltonian?
- andrewkirk
- · Replies 3 ·
Undergrad Does only light have quantized energy.
- Jarfi
- · Replies 6 ·
Graduate Common misconceptions regarding quantum mechanics
- Edgardo
- · Replies 19 ·
Graduate Sample Space for Free Particle in the general case
- IronHamster
- · Replies 4 ·
Graduate Quantum state with well-defined position and momentum?
- romsofia
- · Replies 6 ·
Graduate Heisenberg's Uncertainty Principle, Determinism and Free Will
- RawProduce
- · Replies 12 ·
Graduate Clear and thorough development of the step potential wave function
- andrewkirk
- · Replies 2 ·
Graduate Understanding the Quantum Physics of a Fly on/off a Car Antennae
- rosacea
- · Replies 11 ·
Graduate Dyson's Instability: Negative Fine Structure Constant
- C. H. Fleming
- · Replies 2 ·
Graduate Why does the atom not fold onto itsef?
- Khaled332
- · Replies 3 ·
Graduate How do 6 quarks manifest hiden SU(2) symmetry(together SU(3) symmetry)?
- ndung200790
- · Replies 1 ·
Graduate Solving Eigenvalues and Eigenfunctions of Hamiltonian
- Thunder_Jet
- · Replies 12 ·
Graduate Demonstrating Orthonormality of Eigenfunctions for De Cero-Spin Field
- lalo_u
- · Replies 1 ·
Graduate Pure States or Mixed States: What's the Difference in Quantum Mechanics?
- LarryS
- · Replies 6 ·
Dirac's papers disappeared from archive.org?
- jjustinn
- · Replies 5 ·
Graduate Under what conditions will wave functions collapse in double slit experiments?
- AlonsoMcLaren
- · Replies 2 ·
Graduate Definition of a canonical variable
- ehrenfest
- · Replies 3 ·
Graduate Are points of spacetime unique?
- Runner 1
- · Replies 15 ·
Graduate How to interpret wave function as a matrix
- Black Integra
- · Replies 4 ·
Graduate Spin and Polarization: Understanding the Spin Operator
- peterpang1994
- · Replies 3 ·
Graduate Quantum fluctuations at different height.
- Edi
- · Replies 2 ·
Undergrad What does magnetic moment mean exactly?
- nhmllr
- · Replies 8 ·
Graduate Are These Wavefunctions Orthonormal in Spherical Coordinates?
- MontavonM
- · Replies 2 ·
Graduate How Does Griffith Prove Psi Stays Normalized in Equation [1.25]?
- nymphidius
- · Replies 4 ·
Graduate Theoretical Particles @ Planck Scale: Is there a maximum wavelength of light?
- jrbirch
- · Replies 2 ·
Graduate Is decay of Z or W bosons exothermic?
- jerich1000
- · Replies 2 ·
Graduate Understanding Multiple Delta Function in 1D and Multidimensional Spaces
- fuwuchen
- · Replies 4 ·
Graduate Is this a good analogy to quantum entanglement?
- Runner 1
- · Replies 1 ·
Undergrad With regards to wave functions
- niggawut
- · Replies 2 ·
Graduate Infinite square well potential
- touqra
- · Replies 20 ·
Graduate How are bosons able to be separated in a Bose-Einstein condensate?
- Joscha
- · Replies 7 ·
Graduate Momentum Measurement Confusion
- jfy4
- · Replies 2 ·
Graduate Canonical Commutation Relations: Why?
- jjustinn
- · Replies 15 ·
Graduate Quantum Wave Collapse: Does Consciousness Play a Role?
- Thenewdeal38
- · Replies 8 ·
Graduate Quantum consciousness is ruining my life
- Thenewdeal38
- · Replies 10 ·
Graduate Wavefunction collapse and dirac delta functions
- ralqs
- · Replies 19 ·
Graduate Can Photons Undergo Einstein-Bose Condensation?
- cragar
- · Replies 5 ·
Graduate How to determnine quantum numbers of hybridized orbitals?For
- thedy
- · Replies 2 ·
Graduate Grassmann number and anti-commuting c-number?
- kof9595995
- · Replies 2 ·
Graduate Do particles really emerge from the vacuum at random?
- jeebs
- · Replies 3 ·
Undergrad Why isn't kinetic energy considered a fundamental force like the other four?
- ItsDaveDude
- · Replies 32 ·
Graduate How are probabilistic equations of physics usually formulated?
- Mingy Jongo
- · Replies 3 ·
Graduate Path integrals and foundations of quantum mechanics
- Demystifier
- · Replies 57 ·
Graduate Identity Operator Proving without Bra-Ket Notation
- johng23
- · Replies 3 ·
Graduate Relation between coherent and Fock states of light
- sweet springs
- · Replies 9 ·
Graduate Does wave function of an entangled particle collapse instantly?
- andrewkirk
- · Replies 26 ·
Undergrad How does tourmaline produce negative ion ?
- lnsanity
- · Replies 1 ·
Graduate Quark decay and particle materialization
- rustynail
- · Replies 7 ·
Graduate Shankar's principles of quantum mechanics solutions
- The thinker
- · Replies 8 ·
Graduate Must we add QED correction to perturbative QCD?
- ndung200790
- · Replies 7 ·
Graduate Additional understanding needed on proof involving Hermitian conjugates
- TheFerruccio
- · Replies 4 ·
Graduate Is Faster-Than-Light Motion Possible According to E=mc^2?
- Haroldingo
- · Replies 6 ·
Graduate Angular momentum in bracket notation
- Alexis21
- · Replies 1 ·
Graduate Change of Basis: Converting Wavefunction from S_z to S_x
- Norman
- · Replies 3 ·
Graduate Are Coherent Superposition Particles Considered Conservative Systems?
- LarryS
- · Replies 2 ·
Graduate Intuitive Expl. of Gaussian Wave Packets & $\Delta x \Delta p = \frac{\hbar}{2}$
- ralqs
- · Replies 1 ·
Undergrad Electron & Neutron Absorbing Photons: Charge Explained
- GarryS
- · Replies 4 ·
Graduate Anyone familiar with Srednicki ch72?
- LAHLH
- · Replies 9 ·
Graduate How is momentum conserved when a particle/antiparticle pair is created?
- andrewkirk
- · Replies 4 ·
Graduate Electromagnetic field( though could be any field) produced by a quantum particle
- noblec04
- · Replies 3 ·
Graduate Local superdeterministic hidden variables - in Physical Review Letters
- Demystifier
- · Replies 21 ·
Undergrad Does an Electron Attract or Absorb a Photon?
- GarryS
- · Replies 2 ·
Graduate To find the linear momentum of a function
- MontavonM
- · Replies 2 ·
Graduate Exploring Non-Local Dynamics in Quantum Mechanics and Spacetime Manifold
- riezer
- · Replies 2 ·
Graduate Massless Particles from Massive Theory: Understanding the m->0 Limit
- muppet
- · Replies 1 ·
Graduate Questions about rigid rotating dumbbell molecule
- creepypasta13
- · Replies 1 ·
Graduate How long does it take an electric dipole to emit a photon?
- blenx
- · Replies 12 ·
Graduate Quantum Entanglement and Useful Information
- xeryx35
- · Replies 1 ·
Graduate Neutrinos faster than light speed? What do you guys think?
- Entropee
- · Replies 5 ·
Graduate Born oppenheimer approximation vs adiabatic approximation
- 14lawrenze
- · Replies 4 ·
Graduate Interference between the particles
- jackychenp
- · Replies 3 ·
Graduate Dirac Delta from Continous Eigenfunctions
- Master J
- · Replies 4 ·
Graduate Action-at-a-distance in Sideways EPR-Bell?
- RUTA
- · Replies 93 ·
Graduate Why the renormalization group flow depends only the basic symmetry,but not Lagrangian
- ndung200790
- · Replies 3 ·