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 Annihilation operator acting on a Fock state
- L.W.C
- · Replies 3 ·
Graduate Meaning of Peskin equation (7.25)
- kof9595995
- · Replies 5 ·
Graduate Poisson Bracket to Commutator, What Does it REALLY Mean?
- maverick_starstrider
- · Replies 7 ·
Graduate Does Pauli's Exclusion Principle Apply to the Entire Universe?
- gibbson_e
- · Replies 4 ·
Graduate Why Superselection Rules are Physically Impossible
- Demystifier
- · Replies 26 ·
Graduate If one generator commutes with all other,why must it be generator of U(1)?
- ndung200790
- · Replies 1 ·
Graduate Bell inequality experiments and photon polarisation issue
- hollowsolid
- · Replies 7 ·
Graduate Can I Start with Leonard Susskind's QFT Lectures Without Prior Courses?
- BWV
- · Replies 1 ·
Graduate Understanding Wave Function and Schrodinger Wave Equation
- wasi-uz-zaman
- · Replies 5 ·
Graduate Hamiltonian and Commuting operators
- dudy
- · Replies 2 ·
Graduate Energy release from Graviton / Higgs Boson
- mjcguest
- · Replies 5 ·
Graduate Why isn't p^4 Hermitian for hydrogen-like l=0 wavefunctions?
- scorpion990
- · Replies 3 ·
Graduate Angular Momentum Eigenvalues/Significance of QN l
- "pi"mp
- · Replies 1 ·
Graduate Why the even Eigen states have less energy than odd ones?
- hokhani
- · Replies 8 ·
Graduate Is angular momentum something that is characteristic for a particle?
- Oww2
- · Replies 3 ·
Graduate Can U(1) gauge theory describe the color and weak forces?
- jfy4
- · Replies 1 ·
Graduate Physical mechanism for decoherence?
- billy_boy_999
- · Replies 3 ·
Graduate What happens to the amplitude of a photon in the double slit experiment?
- San K
- · Replies 1 ·
Graduate Would time travel to the past be possible if ?
- Sasquatch544
- · Replies 10 ·
Graduate Hidden Variable - How to calculate the straight line
- Edgardo
- · Replies 1 ·
Graduate Effective mass of Dirac electron increased by electrostatic potential?
- johne1618
- · Replies 2 ·
Graduate How can Black Holes emit radiation?
- BKLounge
- · Replies 33 ·
Graduate History/Derivation of multi-particle wave functions?
- Jerbearrrrrr
- · Replies 1 ·
Graduate Excitation by photons smaller than energy interval
- osturk
- · Replies 2 ·
Graduate Why is an Electric Current Necessary to Measure the Casimir Effect?
- philipp2020
- · Replies 1 ·
Graduate What Are Potential Wells in Lennard Jones Potential?
- ibysaiyan
- · Replies 4 ·
High School Difference between static and magnetic attraction
- lennybogzy
- · Replies 1 ·
Graduate Why do gluons and W and Z bosons have a limited range?
- Bararontok
- · Replies 4 ·
Graduate Momentum Operator w/ Dirac Delta Potential: Justification
- hokhani
- · Replies 1 ·
Graduate Quantum Zeno Effect and Decoherence
- daisey
- · Replies 3 ·
Graduate The Discontinuity of Wave Functions in a Dirac Delta Potential
- hokhani
- · Replies 10 ·
Graduate Dirac Notation in building Path Integrals
- Elwin.Martin
- · Replies 2 ·
Graduate Finding particle momentum from energy and potential difference
- Stickybees
- · Replies 4 ·
Graduate Derivation of the one-particle Green's function?
- gluons
- · Replies 1 ·
Graduate No 2 electrons can have the same energy state
- boffinwannabe
- · Replies 6 ·
Graduate Can real bodies deviate from Planck's law?
- skippy1729
- · Replies 13 ·
Graduate Measure for momentum in curved space
- Judithku
- · Replies 2 ·
High School What do pervading and aether mean?
- s3a
- · Replies 4 ·
Graduate Tap Dark Energy for Energy Needs: Ideas and Questions
- wildwohl
- · Replies 2 ·
Graduate Noob to PF, Quantum Foam question triangles?
- netefficacy
- · Replies 11 ·
Graduate Why does the fine structure constant have its value?
- jsc314159
- · Replies 3 ·
Graduate Why are there no well-defined energy states in nature?
- TrueBlue1990
- · Replies 6 ·
Graduate Brian Cox explain Pauli exclusion principle
- haagone
- · Replies 2 ·
Graduate Angular momentum and the hydrogenic atom
- tomothy
- · Replies 5 ·
Graduate Understanding Peskin's Argument for Equation 6.46
- kof9595995
- · Replies 1 ·
Graduate What Is the Explanation for Quantum Mechanics at the Quantum Scale?
- Tomer
- · Replies 6 ·
Graduate Why is z-axis so special in hydrodgen problem?
- AlonsoMcLaren
- · Replies 10 ·
Graduate Momentum Operator question - Proof found in Intro to Griffiths QM
- srabate
- · Replies 2 ·
Graduate Klein-Gordon Equation: Derivation of Density Relativistic Transform
- Matterwave
- · Replies 6 ·
Graduate Why do L² and L_z form a CSCO?
- nonequilibrium
- · Replies 12 ·
Graduate Writing single particle states in Peskin and Schroeder notation
- maverick280857
- · Replies 1 ·
Graduate Possible Paths and Interference Patterns in the Double Slit Experiment
- San K
- · Replies 1 ·
Graduate Can entangled particles separated by an event horizon maintain correlations?
- stglyde
- · Replies 10 ·
Graduate Instanton contribution to two point function
- physengineer
- · Replies 1 ·
Graduate Are electrons trapped in their own magnetic fields?
- RonL
- · Replies 1 ·
Graduate Are Current Experiments Impacting Quantum Coherence in Consciousness?
- alrah
- · Replies 5 ·
Graduate Renormalization group and universality
- tom.stoer
- · Replies 14 ·
Graduate What information does Schwinger's result for the harmonic oscillator propagator give?
- Morgoth
- · Replies 1 ·
Graduate Why does the momentum of a matter wave depend on the phase velocity?
- 13om13e12
- · Replies 1 ·
Undergrad Difference between orbits and orbitals
- lssam
- · Replies 16 ·
Graduate Dirac Principle Value Identity applied to Propagators
- maverick280857
- · Replies 3 ·
Graduate How to block tunneling current?
- Dilema
- · Replies 1 ·
Graduate How Does Rotating the Local Basis Affect Quantum Entanglement of Photons?
- fulis
- · Replies 1 ·
Graduate Why the Lagrangian must involve derivative of field?
- ndung200790
- · Replies 6 ·
Graduate Measuring classical object to arbitrary precision
- YummyFur
- · Replies 2 ·
Graduate How is the transition amplitude formula derived from the Hamiltonian?
- Identity
- · Replies 5 ·
Graduate Wave-Function, Fourier Transform, and Speed
- danmay
- · Replies 1 ·
Graduate Can Virtual Particle Lifetimes Be Calculated?
- edpell
- · Replies 2 ·
Graduate Proposal for a Quantum Delayed-Choice Experiment
- StevieTNZ
- · Replies 6 ·
Graduate Is Gravity Affected by All Types of Energy?
- Runner 1
- · Replies 8 ·
Graduate Does CMBR include free photons?
- DrChinese
- · Replies 41 ·
Graduate In QED is angular momentum conserved at every order in Dyson series
- kof9595995
- · Replies 9 ·
Graduate Prerequisites for beginning quantum mechanics?
- Alexc475
- · Replies 3 ·
Undergrad Do the electrons have inertial mass?
- FranciscoAlm
- · Replies 4 ·
Graduate QFT Signature: Does it Have its Own Unique Formula?
- Heirot
- · Replies 3 ·
Graduate Inner product with maximally entangled state
- rmp251
- · Replies 2 ·
Graduate Are space and time quantized quantities?
- rpt
- · Replies 34 ·
Graduate Understanding Entanglement and Parallel Computing in Quantum Computing
- KrevinL
- · Replies 1 ·
Graduate Ground state wave function for H=(1/2)p²+(1/24)λ(x²-v²)²
- LAHLH
- · Replies 2 ·
Graduate How does reflection work at the quantum level?
- AdamBenHamo
- · Replies 10 ·
Graduate Which slit/way at time of observation or passing slits?
- San K
- · Replies 6 ·
Graduate Directional photon detector to detect which path?
- Colin Mitch
- · Replies 4 ·
Graduate What theories address the fundamental questions about quantum mechanics?
- dextercioby
- · Replies 145 ·
Graduate Having difficulty comprehending a problem in Peskin's text
- kof9595995
- · Replies 1 ·
Graduate What does the Higgs Field have in common with Congress?
- PatrickPowers
- · Replies 1 ·
Graduate Pauli's exclusion principle Intrpretation
- TMSxPhyFor
- · Replies 29 ·
Graduate Problem in constructing Matrix representation in |↑↓> basis
- ck00
- · Replies 3 ·
Graduate Why are mutually exclusive states orthogonal?
- Demon117
- · Replies 8 ·
Graduate Quantum teleportation of macroscopic objects
- hammertime
- · Replies 68 ·
Graduate Why is Bell's theorem valid if Jaynes' objections are sound?
- gespex
- · Replies 5 ·
Graduate Absorber Theory, Retarded and Advanced Potentials
- FourierFaux
- · Replies 2 ·
Graduate Wheeler's Delayed Choice bibliography
- cacosomoza
- · Replies 2 ·
Graduate A composite system of three particles with different spin
- Demon117
- · Replies 2 ·
Graduate Velocity Measurement in Quantum Mechanics
- facenian
- · Replies 1 ·
Graduate Application of schrodinger's equation
- elshennawy
- · Replies 5 ·
Graduate Governing laws of quantum mechanics
- revo74
- · Replies 1 ·
Graduate Are Photons Actually Infinitely Small Particles?
- sophiecentaur
- · Replies 131 ·
Undergrad Why Does the Zeeman Effect Vary in Cadmium and Other Elements?
- prowler_sn
- · Replies 1 ·
Graduate Is the Classical Electric Potential a Valid Approximation in Quantum Mechanics?
- cragar
- · Replies 2 ·
Graduate Superposition/Wave function inside blackhole
- Derrezed
- · Replies 5 ·