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 Emission Spectrum - Does Energy Always Transfer in Photon Form?
- cubud
- · Replies 16 ·
Graduate Can information or objects avoid degradation in time loops?
- Blouge
- · Replies 2 ·
Undergrad Redshift is due to the expansion of the universe
- phobowute
- · Replies 2 ·
Graduate Low-intensity photon source for quantum key distribution demonstration
- ZxWhatever
- · Replies 14 ·
Graduate Can a Simple Equation Unveil the Electron/Proton Mass Ratio?
- meadbert
- · Replies 5 ·
Graduate Scharnhorst, faster than light
- exponent137
- · Replies 9 ·
Graduate Experiment with single photons
- BenVitale
- · Replies 2 ·
Graduate Is entanglement faster than light?
- apocalight
- · Replies 6 ·
Graduate Difference between wave and matrix QM
- snoopies622
- · Replies 7 ·
Graduate Quick noob question: commutative of eigenstates
- Ykjh98Hu
- · Replies 2 ·
Graduate Why sub-classical physics and quantum physics
- chrisjiang
- · Replies 5 ·
Graduate Virtual shell around a charged particle?
- nomadreid
- · Replies 4 ·
Graduate Proof of Gelfand-Maurin Nuclear Spectral Theorem?
- strangerep
- · Replies 5 ·
Graduate What is the significance of tau and sigma matrices in quantum theory?
- jhaber
- · Replies 4 ·
Graduate Uncertain Hamiltonian and Values Therein
- Kreizhn
- · Replies 5 ·
Graduate Why is average electronic momentum zero in real wavefunctions?
- ani4physics
- · Replies 1 ·
Graduate Understanding Exchange of Particles as a Force
- NanakiXIII
- · Replies 5 ·
Graduate Propagator D for a particle is basically the Green's function
- NanakiXIII
- · Replies 22 ·
Graduate Virtual particules and causation principle
- termina
- · Replies 1 ·
Graduate What Theories Explain the Uncertainty of Radioactive Decay?
- h20 bear
- · Replies 4 ·
Graduate Can quantum entanglement be used for faster-than-light communication?
- thenewmans
- · Replies 40 ·
Graduate Do electrons lose mass due to revolving around nucleon?
- h20 bear
- · Replies 3 ·
Graduate Quantum Tunneling for particles of equal energies but different masses
- atay5510
- · Replies 6 ·
Graduate Can Matter Exist in the Same Spacetime Position?
- freewanderer
- · Replies 7 ·
Graduate What is the origin of the 1/2 symmetry factor in Feynman diagrams?
- ismaili
- · Replies 1 ·
Graduate Hamiltonians, do they need to be positive definite?
- mtak0114
- · Replies 5 ·
Graduate How come you can express the up and down spins
- dudy
- · Replies 1 ·
Graduate Understanding Expectation Values in Quantum Mechanics
- dudy
- · Replies 2 ·
Graduate What is the solution to the self-reference problem in fields?
- nomadreid
- · Replies 2 ·
Graduate Dimension of the gamma matrices in general dimension
- ismaili
- · Replies 5 ·
Graduate How Do Bose-Einstein Condensates Relate to the Heisenberg Uncertainty Principle?
- Bob3141592
- · Replies 1 ·
Graduate Quantum SHO Wave Functions not Complex?
- LarryS
- · Replies 1 ·
Graduate Do Quantum Mechanics PDFs Converge?
- LarryS
- · Replies 2 ·
Graduate Spin and Direction: A Complex Relationship in Particle Physics
- maxverywell
- · Replies 3 ·
Graduate The Double-Slit Misconception?
- MikeFromOhio
- · Replies 11 ·
Undergrad Relation between mass and wavelength
- Misr
- · Replies 6 ·
Graduate Shroedinger Variation- What do you think?
- IJovchevski
- · Replies 3 ·
Graduate Fine structure constant increase with energy?
- Walternate
- · Replies 3 ·
Graduate Commutation relations of P and H
- orienst
- · Replies 2 ·
Graduate What happens when one wall of a particle in a box is suddenly removed?
- jayanth
- · Replies 3 ·
Graduate More correlation functions (Chapter 4, Peskin and Schroeder)
- maverick280857
- · Replies 7 ·
Graduate Location and speed of the electron
- Misr
- · Replies 12 ·
Graduate Why is the antisymmetric term in the 3⊗3̄ SU(3) product completely antisymmetric?
- LAHLH
- · Replies 5 ·
Graduate Do wave probabilities violate the speed of light?
- eloheim
- · Replies 10 ·
Graduate Quantum suicide and immortality
- QuanticEnigma
- · Replies 13 ·
Graduate Are There Distributions Different from Fermi-Dirac and Bose-Einstein?
- ndung200790
- · Replies 1 ·
Graduate Does the Parity Operator Commute with All Hermitian Operators?
- roshan2004
- · Replies 7 ·
Graduate Double slit measurement problem
- marky3
- · Replies 3 ·
Graduate What's the causal model for direction of curl of magnetic field lines?
- msandler
- · Replies 10 ·
Graduate Klein-Gordon propagator ill-defined?
- Šquark
- · Replies 10 ·
Graduate Quantum Wormhole Mechanics and Microtubes
- flattered_cracker
- · Replies 3 ·
Graduate W. Pauli: The connection between spin and statistics
- jostpuur
- · Replies 7 ·
Graduate Foundations of Relativistic QM
- facenian
- · Replies 15 ·
Graduate Can monochromatic light convey information?
- nomadreid
- · Replies 6 ·
Graduate Why is it difficult to accept the idea of nonlocality in quantum mechanics?
- elbeasto
- · Replies 8 ·
Graduate Understanding Angular Momentum: Commutativity and Common Eigenstates
- Anamitra
- · Replies 3 ·
Graduate Constructing Matrix Representations for N-Fermion Spaces
- ismaili
- · Replies 7 ·
Graduate Proving that a propagator decays exponentially for spacelike separations
- NanakiXIII
- · Replies 4 ·
Graduate Integration limits in time-dependent perturbation theory
- ani4physics
- · Replies 1 ·
Graduate How to prove that for any bound electronic state, < p > = 0
- ani4physics
- · Replies 8 ·
Graduate Prove that 0=1 in quantum mechanics
- Petar Mali
- · Replies 28 ·
Graduate Will free electrons in a vacuum tube absorb solar photons and gain momentum?
- AshsZ
- · Replies 4 ·
Graduate Last step of a Schrodinger derivation
- bluestar
- · Replies 6 ·
Graduate Is position not an observable of a photon?
- blenx
- · Replies 37 ·
Graduate Why Is There an Upper Limit to Photon Energy in Hydrogen's Emission Spectrum?
- acherentia
- · Replies 2 ·
Graduate Proving Ehrenfest's Theorem: Diff. vs. Partial Diff.
- calculus_jy
- · Replies 1 ·
Graduate What is the average force for this process
- ani4physics
- · Replies 9 ·
Graduate Decoherence of the Universe as a whole
- Karl Coryat
- · Replies 29 ·
Graduate Do infinite probabilities hurt multiverse theories?
- eloheim
- · Replies 2 ·
Graduate Angular Momentum eigenstates, and tensor products
- darkSun
- · Replies 4 ·
Graduate Can two bodies exist in the same space-time position?
- freewanderer
- · Replies 5 ·
Graduate What exaclty is energy on a quantum level?
- zeromodz
- · Replies 2 ·
Graduate Understanding Entanglement: How Observer Affects Quantum Mechanics
- elbeasto
- · Replies 8 ·
Graduate Confusion about photon scattering and energy in the Raman effect
- ananthu
- · Replies 2 ·
Graduate Are Feynman diagrams evaluated using the residue theorem or Wick rotation?
- RedX
- · Replies 5 ·
Graduate Do particles possess properties before we observe them?
- eloheim
- · Replies 18 ·
Graduate Why are photons virtual in electromagnetic forces but real in light?
- nomadreid
- · Replies 1 ·
Graduate Quantum physics, randomness and its influence on the arrow of time
- Wayston
- · Replies 1 ·
Graduate Integral for the free propagator
- NanakiXIII
- · Replies 2 ·
Graduate Integration by parts in equation 9.25 of Srednicki's QFT
- kexue
- · Replies 3 ·
Undergrad Behaviour of materials for computer graphics applications
- digijoe
- · Replies 1 ·
Graduate What particle/wave carries electric/magnetic fields?
- dcwarrior
- · Replies 1 ·
Graduate Why does Bell introduce hidden variables to decouple correlated outcomes?
- Gordon Watson
- · Replies 215 ·
Graduate Does energy conservation apply in quantum mechanics?
- No-where-man
- · Replies 51 ·
Graduate Is Consciousness actually Information
- hankaaron
- · Replies 7 ·
Graduate Why does blueshift appear to increase photon energy?
- royp
- · Replies 3 ·
Graduate What is Mass? Electrons vs Photons
- vmt4000
- · Replies 10 ·
Graduate Commutation relation of operators
- mathfilip
- · Replies 2 ·
Graduate How is quantum entanglement observed?
- Moviemann345
- · Replies 2 ·
Graduate Chern Simons form: calculation
- SergejVictorov
- · Replies 1 ·
Graduate Gluon Contribution to Baryon Mass
- cbd1
- · Replies 19 ·
Graduate What kind of wave is associated with particles , in wave particle duality?
- Ahmed Abdullah
- · Replies 7 ·
Graduate Position,velocity cannot be found simultaneously with appreciable
- prudhvi mohan
- · Replies 6 ·
Graduate Is quantum theory complete if it can't predict measurement outcomes?
- computerphys
- · Replies 84 ·
Graduate What Determines the Observer Effect in Quantum Physics?
- J.W. Coleman
- · Replies 3 ·
Graduate Can Spooky Entanglement Enable Faster Than Light Communication?
- FreeTinker
- · Replies 1 ·
Graduate Canonical Quantization of KG field
- luksen
- · Replies 19 ·
Graduate How do QM's indistinguishability and SR's relativity of simultaneity reconcile?
- robheus
- · Replies 51 ·
Graduate Why must the Casimir effect plates be conductors?
- Mu naught
- · Replies 1 ·
Graduate A Simple Proof Of Bell's Theorem
- alt
- · Replies 31 ·