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 Orchestration of Quantum Entanglement
- tim1608
- · Replies 6 ·
Graduate Magnitude of the scattering ampliudes in QFT
- DrFaustus
- · Replies 20 ·
Graduate The dipole interaction and fermions
- Niles
- · Replies 14 ·
Graduate Is space quantized or is it seamless and smooth?
- jsirak2
- · Replies 7 ·
Graduate What is the physical meaning of the double rotation symmetry of spin-1/2 states?
- dudy
- · Replies 6 ·
Graduate Do photons gain mass in the presense of a black hole?
- kjamha
- · Replies 4 ·
Graduate A question regarding finite potential wells
- dogmatic
- · Replies 2 ·
Graduate How photon entanglement works?
- Natko
- · Replies 3 ·
Graduate Is there lighter particle than photon?
- intobrain
- · Replies 2 ·
Graduate /The probability density does not goto zero at the nodes if
- dpa
- · Replies 1 ·
Graduate Question on the nature of spacetime
- Irish Dave
- · Replies 2 ·
Graduate Do gamma and X-ray wavelength photons also exist as collapse able wave fx's?
- xander77
- · Replies 3 ·
Graduate Is entanglement still considered spooky ?
- Karl Coryat
- · Replies 49 ·
Graduate Why use phase factors in spin-1/2 eigenstate expressions
- Xyius
- · Replies 4 ·
Graduate Wave funtions for a massive particle moving in 1D harmonic oscillating potential
- arp777
- · Replies 2 ·
Graduate What is (physical) information?
- momentweaver
- · Replies 1 ·
Graduate Analytic Continutation of Quantum Statistical Mechanics
- unchained1978
- · Replies 1 ·
Graduate Operators and commutors, and order.
- LogicX
- · Replies 11 ·
Graduate Something's wrong in < Intro to QM >, by Griffiths
- liumylife
- · Replies 7 ·
Graduate Non-covariant parts of the propagator?
- ismaili
- · Replies 1 ·
Graduate Understanding Spherical Symmetry in the Hydrogen Atom
- VortexLattice
- · Replies 10 ·
Graduate Intuitive diagrams for Feynman diagram
- dpa
- · Replies 3 ·
Graduate Normalisation condition notation for wavefunctions
- tomothy
- · Replies 2 ·
Graduate Pauli Exclusion Principle and Black Holes
- cdux
- · Replies 13 ·
Graduate Reflection vs scattering of photons in quantum field theory
- enroger0
- · Replies 1 ·
Graduate How Does Zee Derive the Double Factorial in QFT's Gaussian Integral?
- BWV
- · Replies 6 ·
Graduate Can Extending the Delay in a Quantum Eraser Experiment Alter Past Events?
- Spacezilla
- · Replies 47 ·
How to Make a Delicious Pizza at Home
- quddusaliquddus
- · Replies 27 ·
Graduate Quantum Entanglement in a Human Brain
- tim1608
- · Replies 6 ·
Graduate Do virtual gnomes play a role in black hole physics?
- Pronoein
- · Replies 18 ·
Graduate What is the Principle that gives particles their own actual size?
- cdux
- · Replies 1 ·
Graduate Why are quantities called operators
- dpa
- · Replies 9 ·
Graduate Are entangled photons in superposition of V/H and 45/135 polarisations?
- StevieTNZ
- · Replies 13 ·
Graduate Why does the action vary to zero with respect to the field?
- georg gill
- · Replies 1 ·
Graduate Wavefunction vs EM wave of a Photon
- waterfall
- · Replies 3 ·
Graduate Feynman diagrams for more than two particles
- radoo
- · Replies 3 ·
Graduate What is the physical interpretation of bra-ket notation in quantum mechanics?
- sampo
- · Replies 10 ·
Graduate What is the momentum operator in different bases and how can it be obtained?
- unchained1978
- · Replies 1 ·
Graduate Expectation values for expanded wave functions
- betba
- · Replies 6 ·
Undergrad Photon detector used in Young's Double Slit experiment?
- Edgewood11
- · Replies 3 ·
Graduate Wavefunction collapse with a single photon?
- Xilor
- · Replies 1 ·
Graduate What is the role of fields in Quantum Field Theory (QFT)?
- mysearch
- · Replies 41 ·
Graduate Is Wick rotation necessary to define quantum field theory?
- atyy
- · Replies 17 ·
Graduate Parity operators and anti commutators
- qtm912
- · Replies 1 ·
Graduate What is the opposite of realism in quantum mechanics?
- mjpam
- · Replies 32 ·
Graduate Questions on Aitchison's gauge theories book chapters 1-2
- mxbob468
- · Replies 1 ·
Graduate How does measurement not collapse the superposition in quantum computing?
- joelio36
- · Replies 5 ·
Graduate How Does Path Integral Formalism Derive the Quantum Propagator?
- squigglywolf
- · Replies 5 ·
Graduate End of Realism? Experiments Test Quantum Mechanics
- dm4b
- · Replies 38 ·
Graduate 181* NMR pulse, atomic description
- dilberto
- · Replies 1 ·
Graduate Double Slit Experiment: Does Energy Decrease?
- nitsuj
- · Replies 3 ·
Graduate 3 body relativistic phase space
- Final
- · Replies 7 ·
Graduate Is the ground state of a harmonic oscillator unique?
- maverick280857
- · Replies 10 ·
Graduate Does Ghirardi's Thought Experiment Challenge Quantum Mechanics Predictions?
- StevieTNZ
- · Replies 9 ·
Graduate Addition of Complex Term in Lippmann Schwinger Equation
- richard wakefield
- · Replies 3 ·
Graduate Destructive interference in electron diffraction
- jd12345
- · Replies 1 ·
Graduate Bra State Meaning: Negative Energy Possibility?
- intervoxel
- · Replies 3 ·
Undergrad Revolution of electron and that of the planets
- AakashPandita
- · Replies 8 ·
Graduate Understanding Glauber Coherent States
- paris1244bc
- · Replies 1 ·
Graduate Can a black hole compress smaller than the Planck length?
- dida
- · Replies 2 ·
Graduate Renormalization massless phi4 theory in Peskin.
- bifolco84
- · Replies 2 ·
Graduate Full quantum mechanical description of the double slit experiment
- kith
- · Replies 9 ·
Graduate How Does QFT Describe or Predict the Position of a Particle?
- LarryS
- · Replies 33 ·
Graduate Do detectors measure energy in the double slit experiment?
- o-man
- · Replies 1 ·
Graduate Extra term in Velo-Zwanziger's hermitian form
- Renattus
- · Replies 2 ·
Graduate How Many Quantum Numbers Define a Spin 1/2 Particle's State?
- aimforclarity
- · Replies 1 ·
Graduate Determination of time-dependent coefficients (QM)
- Aeon
- · Replies 2 ·
Graduate Does the time dependent hamiltonian have stationary states?
- nebula009
- · Replies 5 ·
Graduate Number of Photons and wavelength?
- vhbelvadi
- · Replies 3 ·
Graduate Are all particles initially entangled or must entanglement be created?
- smithnya
- · Replies 2 ·
Graduate Why is the imaginary unit i in the momentum operator definition?
- dpa
- · Replies 2 ·
Graduate Why we do not consider the divergence due to mass-shell in QED?
- ndung200790
- · Replies 3 ·
Graduate How Does the Born Series Expansion Translate to Spatial Representation?
- PineApple2
- · Replies 2 ·
Graduate What is the meaning of a collinear photon in Quantum Electrodynamics (QED)?
- ndung200790
- · Replies 4 ·
Graduate Guage symmetry - invariance under arbitrary phase change
- arlesterc
- · Replies 6 ·
Graduate What does state mean in quantum mechanics?
- timothyc
- · Replies 3 ·
Graduate Why are nuclear excited states always eigenstates of parity?
- ncarron
- · Replies 8 ·
Graduate Basic questions on collisions, particles
- Helicobacter
- · Replies 2 ·
Undergrad Can Light Travel Faster Than Speed of Light
- Svensken
- · Replies 25 ·
Graduate Coherence Domain in Living System
- rodsika
- · Replies 4 ·
Graduate What Determines Critical Boson Exchange Rates in Sub-Atomic Interactions?
- questionpost
- · Replies 11 ·
Graduate The Dirac delta in squere root of the absolute value
- nykon
- · Replies 19 ·
Graduate Why does wave-function collapse occur?
- questionpost
- · Replies 32 ·
Graduate Faddov Ghosts and the non-Abelian Lagrangian
- Elwin.Martin
- · Replies 2 ·
Graduate If that other thing didn't break a rule in relativity, how about this?
- questionpost
- · Replies 25 ·
Graduate Time dependent Hamiltonians: features
- abhinavd
- · Replies 4 ·
Graduate Question on particles/fields in QFT
- AuraCrystal
- · Replies 3 ·
Graduate How Does Electron Degeneracy Allow White Dwarf Stars to Emit Light?
- Johnahh
- · Replies 3 ·
Graduate Functions with operator valued arguments acting on eigenstates
- qtm912
- · Replies 4 ·
Graduate How can we solve IR divergences problem?
- ndung200790
- · Replies 5 ·
Graduate Limit as distinguishable->indistinguishable
- mikeu
- · Replies 11 ·
Graduate QM focused Documentaries/lectures.
- shifty88
- · Replies 3 ·
Graduate About wavefunctions, their complex nature and their approximations?
- darfunkel
- · Replies 18 ·
Graduate Do atoms violate thermodynamics and relativity?
- questionpost
- · Replies 8 ·
Graduate Can making a measurement change subsequent measurements?
- andrewkirk
- · Replies 8 ·
Graduate Global U(1) invariant of Dirac Lagrangian
- metroplex021
- · Replies 5 ·
Graduate Neglecting terms in a Lagrangian
- Kyleric
- · Replies 5 ·
Graduate Instanton configurations of an even anharmonic oscillator
- Syrius
- · Replies 1 ·
Graduate What is a photon in respect to electromagnetic waves?
- khkwang
- · Replies 11 ·
Graduate What's weird in the Stern-Gerlach experiment?
- alemsalem
- · Replies 4 ·