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.
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Graduate Quantum Entanglement, and Information.
- Dewgale
- · Replies 6 ·
Graduate Sakurai page 91: Simple Harmonic Oscillator, trouble understanding
- omoplata
- · Replies 3 ·
Graduate Renormalization group equations and scale dependence of coupling constants
- center o bass
- · Replies 5 ·
Graduate Renormalization procedure (Peskin and Schroeder)
- center o bass
- · Replies 3 ·
Graduate Why do neutrinos have left-handed polarization if they oscillate?
- wotanub
- · Replies 6 ·
Graduate What do creation operators measure?
- jjustinn
- · Replies 1 ·
Graduate Spontaneous parametric down-conversion and energy-momentum cons.
- Spinnor
- · Replies 14 ·
Graduate [Double slit experiment] if we look back at slit, what we'll see?
- Chitose
- · Replies 16 ·
Graduate General relativity and quantum mechanics
- safachag
- · Replies 4 ·
Graduate Measuring effective (renormalized) coupling constants
- center o bass
- · Replies 4 ·
Graduate Why is l=0 forbidden for photon states with j=0 in Landau-Lifshitz?
- Takeshin
- · Replies 6 ·
Graduate Proving commutation relations with operator functions
- omoplata
- · Replies 11 ·
Graduate Can quantum operators be pictured in terms of wave packets?
- diagopod
- · Replies 7 ·
Graduate Gravity and the double slit experiment
- hankaaron
- · Replies 11 ·
Undergrad Do electrons pass through a single slit as waves or particles?
- capcom1983
- · Replies 22 ·
Undergrad Uncertainty principle using 2 detectors
- PhysicsDad
- · Replies 14 ·
Graduate Does observation collapse the wave function by exceeding parameter limits?
- rlinsurf
- · Replies 2 ·
Graduate Dimension of Rays in Hilbert Space
- mpv_plate
- · Replies 5 ·
Graduate Schroedinger's cat from the cat's point of view
- LedPhoton
- · Replies 15 ·
Graduate The Holographic Universe: Dividing Reality into Bits
- ebodet18
- · Replies 2 ·
Graduate Shortest wavelenght emmited by a black body
- AkInfinity
- · Replies 4 ·
Graduate Goldstone boson state, conserved current
- LayMuon
- · Replies 8 ·
Graduate Interaction between Neutrons/Neutrinos
- xortdsc
- · Replies 11 ·
Graduate Sakurai page 54: Is this a Taylor expansion?
- omoplata
- · Replies 7 ·
Graduate Ruling out retro-causality in the delayed choice quantum eraser
- JPBenowitz
- · Replies 35 ·
Graduate Precise measurements in Quantum Mechanics
- mpkannan
- · Replies 5 ·
Graduate Dimensional regularization and renormalization scale.
- center o bass
- · Replies 1 ·
Graduate What’s wrong with this EPR-Bell FTL Gedankenexperiment?
- DevilsAvocado
- · Replies 11 ·
Graduate Where does energy come from in quantum tunneling through a higher barrier?
- Jano L.
- · Replies 31 ·
Graduate Can Free Fundamental Particles Absorb Photons?
- subsonicman
- · Replies 23 ·
Graduate What does 'observing' electrons mean in the double slit experiment?
- kjamha
- · Replies 12 ·
Graduate What is the true nature of an atom and how can we visualize it?
- jochemspek
- · Replies 21 ·
Graduate RG equation and invariance of the vertex function under scaling(Ryder)
- center o bass
- · Replies 14 ·
Graduate Quantum Mechanical Operators - A Question Or Two
- dweeegs
- · Replies 1 ·
Graduate Do QCD, QED and scalar theory have Landau poles?
- geoduck
- · Replies 22 ·
Graduate Why is weak force short range action?
- AlephClo
- · Replies 2 ·
Graduate Why don't quantum fluctuations cause us to fall through the floor?
- BoxedCat
- · Replies 14 ·
Graduate Tensor coupling and 6j/9j symbols
- Yoran91
- · Replies 1 ·
Graduate What is the nature of sound from the quantum perspective?
- Double-Slit
- · Replies 2 ·
Winning Nobel Prize: Friend's Experiment to Prove Electron Not a Particle
- AkInfinity
- · Replies 4 ·
Graduate How does Sakurai equation 1.7.31 lead to the delta function?
- omoplata
- · Replies 4 ·
Graduate General form and parametrization of two-qubit entangled states
- shakgoku
- · Replies 1 ·
Graduate Antiparticles identical in qft
- copernicus1
- · Replies 11 ·
Graduate Double-slit interference pattern measurement with entangled photons
- DrChinese
- · Replies 9 ·
Undergrad Does a photon have energy if its mass is 0?
- CallumC
- · Replies 5 ·
Graduate Deriving transmission and reflection coefficients from probability current
- 71GA
- · Replies 15 ·
Graduate Do antiparticles travel backward in time or is that just a Feynman diagram interpretation?
- m1rohit
- · Replies 14 ·
Graduate Derivation of Spin-orbit Coupling
- kiwakwok
- · Replies 2 ·
Graduate Para / Ortho Hydrogen (H2) Spins
- YAHA
- · Replies 2 ·
Graduate Difference between antiparticles and exotic matter
- jackyruth
- · Replies 5 ·
Graduate Why wouldn't this experiment allow superluminal communication?
- bcrelling
- · Replies 7 ·
Graduate Sakurai : Approximations in the construction of Quantum theory
- omoplata
- · Replies 2 ·
Graduate Is single particle interference explainable via entanglement?
- San K
- · Replies 5 ·
Graduate Why does intensity decrease after peaking in the visible range?
- |mathematix|
- · Replies 5 ·
Graduate Complete set of stationary solutions
- MHD93
- · Replies 5 ·
Graduate Product of three gamma matrices
- drpepper0708
- · Replies 27 ·
Graduate Polarization of photon-Peskin and Schroeder
- ndcat10
- · Replies 2 ·
Undergrad Wave function sign convention and what ∂y/∂x represents
- fazio93
- · Replies 5 ·
Graduate Why is harmonic oscillator energy written with ℏω instead of hν?
- Abigale
- · Replies 1 ·
High School Uncertanity Principle in Macrocosm
- PhyHunter
- · Replies 2 ·
Graduate Rotation operator quantum mechanics
- Yoran91
- · Replies 5 ·
Graduate Counterterms Feynman Rules Derivation
- center o bass
- · Replies 4 ·
Graduate Quantum Eraser Interference Patterns
- msumm21
- · Replies 6 ·
Graduate Wigners Theorem And Linerarity
- bhobba
- · Replies 1 ·
Graduate Nuclear charge and atomic orbitals
- kthejohnster
- · Replies 2 ·
Graduate Virtual photons and long range force carrier
- ftr
- · Replies 2 ·
Graduate What does local causality mean?
- onelastdance
- · Replies 1 ·
Graduate Heisenburgs Uncertainty Principle in a narrow tube?
- cmcraes
- · Replies 4 ·
Graduate Is CPT-Invariance Sufficient for Lorentz Covariance and Locality?
- VantagePoint72
- · Replies 2 ·
Graduate Planck's radiation law: Act of desperation
- Saxby
- · Replies 1 ·
Graduate Quantum mechanics probability
- matematikuvol
- · Replies 11 ·
Graduate Representation of Lorentz group and spinors (in Peskin page 38)
- silverwhale
- · Replies 13 ·
Graduate What is the quantum mechanics behind blackbody radiation?
- Jimmy87
- · Replies 4 ·
Graduate What is the quantum of an electromagnetic wave?
- Nidhima Grover
- · Replies 4 ·
Graduate Two qubit state multiplication
- R_physics
- · Replies 5 ·
Graduate Wigner function for orthogonal harmonic oscillator states
- kd6ac
- · Replies 6 ·
Graduate How Can Intuitive Approaches Enhance Quantum Operator Derivation?
- BruceW
- · Replies 8 ·
Graduate Do Photons Actually Move at the Speed of Light?
- ExecNight
- · Replies 4 ·
Graduate How do photons explain why we see colors of objects?
- jdelaroy
- · Replies 5 ·
Graduate Partial wave analysis - incoming/outgoing?
- JoePhysicsNut
- · Replies 4 ·
Undergrad Why don't reflected and refracted rays go in random directions?
- theojohn4
- · Replies 4 ·
Graduate Is a Quantum Trapped Superconductor Inside a Vacuum the Ideal Simple Machine?
- Einstein1999
- · Replies 2 ·
Graduate Path integral and gaussian integral
- LayMuon
- · Replies 1 ·
Graduate Separation of variables to solve Schrodinger equations
- ace1719
- · Replies 4 ·
Graduate Variational method, is the wavefunction the best for all
- cheong
- · Replies 1 ·
Undergrad Photon Wavelength: Particle or Wave?
- L4xord
- · Replies 3 ·
Graduate Physical mass in a quantum field theory
- center o bass
- · Replies 1 ·
Graduate Questioning Neil Turok's Claim on Quantum Information
- gendou2
- · Replies 6 ·
Graduate Hamiltonian eigenstate problem
- coki2000
- · Replies 9 ·
Graduate Does mass bend the Higgs field as well?
- San K
- · Replies 1 ·
High School What's the connection between the double slit experiment and Compton scattering?
- huhjinsoo
- · Replies 1 ·
Graduate How to find the ground state of He atom
- coki2000
- · Replies 1 ·
Graduate Does QFT respect conservation of angular momentum?
- Soph_the_Oaf
- · Replies 9 ·
Graduate What is the meaning of Wave function?
- Outrageous
- · Replies 1 ·
Undergrad Calculating Uncertainty in Position for Scientists
- darkfall
- · Replies 1 ·
Graduate Is Uncertainty in Velocity Equal to the Velocity Itself?
- darkfall
- · Replies 3 ·
Graduate How photons and static em feilds work
- MitchellW
- · Replies 4 ·
Graduate Why electrons can have only 2 spin orientations?
- jaumzaum
- · Replies 19 ·
Graduate Imaginary momentum and virtual particles
- cabrera
- · Replies 2 ·
Undergrad Can photons have mass?
- medgalis
- · Replies 11 ·