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 Dirac's Argument and Charge Quantization in Composite Particles
- stevendaryl
- · Replies 4 ·
Graduate Blackbody radiation over whole frequency spectrum
- CassiopeiaA
- · Replies 2 ·
Graduate What is the significance of a Quantum Top in Chaichian & Demichev's work?
- ShayanJ
- · Replies 1 ·
Graduate Two-point correlation function in path integral formulation
- besprnt
- · Replies 1 ·
Graduate Little group and photon polarizations
- geoduck
- · Replies 5 ·
High School Where would the highest concentration of electrons be located?
- !Jon Snow!
- · Replies 7 ·
Undergrad Why Doesn't an Electron Collapse into a Proton Despite Opposite Charges?
- Boundless
- · Replies 17 ·
Graduate If <p> = 0 how can we know the energy of the system
- talabax
- · Replies 6 ·
Graduate Orthonormal Basis: Show A is Self-Adjoint
- dyn
- · Replies 3 ·
Graduate Are particle waves from de Broglie waves, wave functions, or fermionic fields?
- Delta2
- · Replies 10 ·
Graduate Computing SAB overlap of two Kohn-Sham determinants
- limorsj
- · Replies 1 ·
Graduate Does Busch's proof generalize Gleason's theorem to effects?
- Fredrik
- · Replies 54 ·
Graduate How do polarisers let a photon through
- Johan0001
- · Replies 19 ·
Graduate Double-Slit Experiment Variations List
- ricardo81
- · Replies 13 ·
Graduate Particle Spin - how to cause change to direction
- len
- · Replies 6 ·
Graduate Why Quantization? Elucidating Wave Nature of Particles
- abhilash.s
- · Replies 8 ·
Undergrad Are atomic orbitals electron standing waves?
- abhilash.s
- · Replies 6 ·
Undergrad Relation of radiation wavelength and photosynthetic photon flux?
- Farah
- · Replies 3 ·
Undergrad Electron Orbitals: Determining Energy Differences Between Orbitals
- radaballer
- · Replies 2 ·
Graduate Qubits and angular momentum-like operators
- lfqm
- · Replies 3 ·
Graduate Under what circumstances does the wave function collapse?
- jaydnul
- · Replies 85 ·
Undergrad Confusion about electron energy levels
- Yashbhatt
- · Replies 4 ·
Graduate How do quantum fluctuations originate?
- Mayank_Jha
- · Replies 9 ·
Graduate What does a spin 1/2 wave function actually look like
- jelathome
- · Replies 6 ·
Graduate Physicist seeking prerequisites for studying quantum biology
- robertojgg
- · Replies 1 ·
Graduate Blackbody Radiation: QFT-Book Analysis
- branch
- · Replies 7 ·
Graduate Quantum imaging with undetected photons
- microsansfil
- · Replies 3 ·
Graduate Renormalization and scale dependence
- TrickyDicky
- · Replies 5 ·
Graduate Is psi-function really a cloud of probability?
- altsci2
- · Replies 15 ·
Graduate How is total angular momentum conserved in particle physics?
- Quarlep
- · Replies 2 ·
Graduate Distance between equilibrium and nonequilibrium states
- Billy Yang
- · Replies 4 ·
Graduate Dynamical Variables As Operators
- Bashyboy
- · Replies 6 ·
Quantum physics doesen't say that our thoughts manifest in reality
- batmanandjoker
- · Replies 8 ·
Graduate How Dirac's energy equation led to antimatter
- Quarlep
- · Replies 3 ·
Graduate Are composite particles, like atoms, identical bosons/fermions?
- atat1tata
- · Replies 10 ·
Graduate Sniping slits in double slit experiment?
- Jabbu
- · Replies 43 ·
Graduate Positron to replace proton as the nucleus of an atom
- jaydnul
- · Replies 4 ·
Graduate Radial polarization and optical vortex
- e2718281
- · Replies 1 ·
Graduate How do gauge fields differ from the Higgs field?
- J'onn J'onzz
- · Replies 2 ·
Graduate Does the PBR theorem prove quantum states are real?
- Demystifier
- · Replies 69 ·
Graduate What is the fundamental theory of quantum mechanics?
- Demystifier
- · Replies 36 ·
Graduate Quantum weirdness in everyday life
- Demystifier
- · Replies 9 ·
Graduate Simplifying Operator and Dirac Algebra for Kets
- MikeBuonasera
- · Replies 3 ·
Graduate Modeling CO2 Laser as a 4-Level Laser
- chimay
- · Replies 3 ·
Graduate Are normalization constants of wave equation time dependent?
- singularity93
- · Replies 3 ·
Graduate Spin, linear momentum and orbital angular momentum
- ad6190
- · Replies 2 ·
Graduate Polarization of a photon how do we know?
- Johan0001
- · Replies 38 ·
Undergrad What causes stimulated emission to occur in quantum mechanics?
- Yosty22
- · Replies 1 ·
Graduate What are virtual particles and why do they have large implications?
- JohnPrior3
- · Replies 14 ·
Graduate Is there a blue-anti blue gluon?
- saif gaber
- · Replies 2 ·
Undergrad Walking sinusoidal as you follow a RF Standing Wave?
- jmatejka
- · Replies 3 ·
Graduate Photon Momentum varies along waveform?
- jmatejka
- · Replies 5 ·
Graduate Understanding Quantum Physics Identities
- kennalj65
- · Replies 1 ·
Graduate Spin/angular magnetism Bohr magneton quantum thing
- STEMucator
- · Replies 3 ·
Graduate What Is Psi in Quantum Mechanics?
- quawa99
- · Replies 2 ·
Graduate Identical particles and Feynman diagrams
- taishizhiqiu
- · Replies 3 ·
Graduate Gauge Invariance in QM: P_y - Conserved or Not?
- taishizhiqiu
- · Replies 3 ·
Graduate How an electromagnetic amplitude becomes QM probability?
- luisgui
- · Replies 4 ·
Graduate Innsbruck Bell test raw data timing and coincidence matching
- Jabbu
- · Replies 6 ·
Graduate Are Particles or Fields More Fundamental in Quantum Mechanics?
- atyy
- · Replies 23 ·
Graduate Is |psi|^2 Really Just a Probability Density in Quantum Mechanics?
- fluidistic
- · Replies 23 ·
Graduate Why is entanglement necessary for understanding quantum mechanics?
- Johan0001
- · Replies 220 ·
Graduate Wave packet with increasing time
- mcheung4
- · Replies 1 ·
Graduate Why discrete space and time are incompatible with relativity
- bobie
- · Replies 25 ·
Graduate Mathematical model for current vs. strain in quantum tunnelling composites
- willfarquhar96
- · Replies 2 ·
Graduate Does energy level determine degeneracy in 3D systems?
- vabite
- · Replies 3 ·
Graduate Question on angular momentum of triplet and singlet wavefunctions
- The_Foetus
- · Replies 3 ·
Graduate Solving Schwartz QFT Eqn 5.26 to Get Eqn 5.27
- merrypark3
- · Replies 9 ·
Graduate Trying to understand quantum mechanics
- HAMJOOP
- · Replies 5 ·
Graduate Different forms of Schrodinger equation
- QMechanic
- · Replies 2 ·
Graduate Why did the OPERA experiment fail to show FTL neutrinos?
- drphysica
- · Replies 5 ·
Graduate What sub-field of quantum information should I focus on for my research?
- PaulDirac
- · Replies 4 ·
Graduate To what extent can one bring classical equations to quantum mechanics
- taishizhiqiu
- · Replies 9 ·
Graduate Is quantization compatible with discontinuity in physics?
- D.R.U
- · Replies 4 ·
Graduate Background in waves required for quantum mechanics
- QMechanic
- · Replies 13 ·
Undergrad Electron energy states and photon emission?
- Jabbu
- · Replies 18 ·
Graduate Hamiltonian Operator: Difference vs. E?
- physicsfirzen
- · Replies 2 ·
Undergrad Why doesn't final observation at the back screen affect the double slit pattern?
- Hoogley
- · Replies 7 ·
Graduate Stationary States in Griffiths Intro to QM
- mcheung4
- · Replies 6 ·
Graduate Double slit experiment with multiple sources of particles
- Angelus
- · Replies 8 ·
Graduate Are PVMs more fundamental than POVMs from the view of decoherence?
- atyy
- · Replies 15 ·
Graduate Do photons bounce into each other?
- acesuv
- · Replies 4 ·
High School How do you determine the number of protons and neutrons in an element?
- onurbeyaz
- · Replies 2 ·
Graduate Why do alpha rays tear out neutrons from beryllium but not gold?
- onurbeyaz
- · Replies 7 ·
Graduate Origin of infrared divergences in perturbation theory
- geoduck
- · Replies 5 ·
Graduate "Physical system" in quantum mechanics ?
- microsansfil
- · Replies 4 ·
Undergrad Quantum mechanics books for self-study before taking a course
- EverGreen1231
- · Replies 1 ·
Graduate What is the gauge boson for magnetism and its relation to electricity?
- jaydnul
- · Replies 4 ·
Graduate Hesienberg Uncertanity Principle
- Quarlep
- · Replies 6 ·
High School Alpha Rays and the Movement of Atoms' Nucleus
- onurbeyaz
- · Replies 2 ·
Graduate What makes an outcome random if coin flips tend toward 50-50?
- Jabbu
- · Replies 22 ·
Graduate Electron Positron Annihilation
- Rob Hoff
- · Replies 12 ·
Graduate Question about the Quantum Zeno Effect
- Gerinski
- · Replies 5 ·
Graduate Spin Direction for Massless Particles
- LarryS
- · Replies 8 ·
Graduate Energy release when H atoms form NH2 molecule
- starrlordd
- · Replies 19 ·
Graduate Position-momentum commutation relation
- jety89
- · Replies 7 ·
Graduate Does the wf entangle everything in the neighborhood?
- maline
- · Replies 1 ·
Graduate Shifting of the wall problem II
- tom.stoer
- · Replies 46 ·
Graduate "Asking photons where they've been" -- the DFBV experiment
- RUTA
- · Replies 5 ·
Graduate When does spontaneous emission create a coherent superposition of states?
- vtahmoorian
- · Replies 3 ·