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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High School What is the basis of photon polarization?
- preet0283
- · Replies 3 ·
Undergrad Discussing Physics and Universe Formation
- whoknows
- · Replies 2 ·
Graduate Violation of symmetry and conservation
- touqra
- · Replies 2 ·
Graduate Why does superposition make quantum computers faster?
- tavi_boada
- · Replies 2 ·
Graduate Photons (compton effect, pair production)
- ~()
- · Replies 1 ·
Graduate How do we know that Quantum Mechanics is right?
- QuantumDefect
- · Replies 24 ·
Graduate How does spontaneous breaking symmetry occur in quantum mechanics?
- reggepole
- · Replies 7 ·
Graduate What are mass dimensions of fields in quantum field theory?
- preet0283
- · Replies 2 ·
Graduate Spinor fields and spinor wave functions
- fliptomato
- · Replies 2 ·
Graduate Superposition of Time Evolutions
- samualt
- · Replies 1 ·
Graduate Pair Production: Why Not in Empty Space?
- Ratzinger
- · Replies 2 ·
Graduate Anthropic Multiverse Origin of Life
- dwilkerson
- · Replies 3 ·
Graduate Quantum Mechanics and the Kochen-Specker Theorem
- Pengwuino
- · Replies 8 ·
Graduate Can Photons Interfere After Passing Through a Calcite Crystal?
- εllipse
- · Replies 9 ·
Graduate Does energy conservation hold if eigen-energies are multiplied by probabilities?
- Opi_Phys
- · Replies 2 ·
Graduate Why can't Spooky action send FTL information?
- amoses7178
- · Replies 8 ·
Graduate Photon Wave Functions: Beyond the Wave/Particle Duality
- Ratzinger
- · Replies 3 ·
Graduate Why does the Klein-Gordon Fourier expansion lead to equation 2.21 in Peskin & Schroeder?
- Ratzinger
- · Replies 8 ·
Graduate Dirac equation from random walk
- CarlB
- · Replies 4 ·
Graduate Quantum Fizz is so counterintuitive
- catalyst55
- · Replies 13 ·
Graduate How has quantum physics evolved over time?
- RAKESH_GITS_FAN
- · Replies 2 ·
Graduate Which Quantum Field Theory Books Are Best for Condensed Matter Physics?
- MalleusScientiarum
- · Replies 2 ·
Undergrad Why Does Wave Group Size Affect Wavelength Range?
- asdf1
- · Replies 10 ·
Undergrad Wave Formula Differs in 3-D | Why?
- asdf1
- · Replies 9 ·
Graduate Some questions on the Dyson expansion of the S matrix
- robousy
- · Replies 1 ·
Undergrad Determine the velocity of an electron orbiting an atom ?
- Victor Frankenstein
- · Replies 2 ·
Graduate Referencess on Dynamical Symmetry Breaking
- Neitrino
- · Replies 3 ·
Undergrad How Does a Current-Carrying Loop Behave in a Magnetic Field?
- Revolutioninc
- · Replies 2 ·
Graduate Why use normal ordering in QFT if it makes vacuum expectations vanish
- robousy
- · Replies 3 ·
Graduate Is it possible to stablize positrons,hyperons and muons
- Quasitrium
- · Replies 2 ·
Graduate How can causality work instantly over a distance without absolute simultaneity?
- εllipse
- · Replies 85 ·
Graduate Stablizing Exotic atoms Impossible?
- Quasitrium
- · Replies 2 ·
Graduate Classical example that presents quantum aspects
- DaTario
- · Replies 2 ·
Graduate Why are Hydrogen Orbitals Asymmetrical Despite a Spherically Symmetric Problem?
- LeonhardEuler
- · Replies 10 ·
Graduate What does Quantum Physics tell us?
- Bigtex005
- · Replies 14 ·
Graduate What is light a wave in according to quantum mechanics?
- LeonhardEuler
- · Replies 25 ·
Graduate Understanding "Oscillators in Cavity Walls
- asdf1
- · Replies 4 ·
Graduate What Keeps Discrete Spacetime Together at GR Scales?
- Spin_Network
- · Replies 6 ·
Graduate Any photon is a spin 1 particle
- member 11137
- · Replies 7 ·
Graduate Trying to understand how two particles interact
- box
- · Replies 3 ·
Graduate Is Planck length a minimum physical length or just a measurement limit?
- peter8
- · Replies 21 ·
Graduate Classical fields and quantum fields
- Kruger
- · Replies 11 ·
Graduate Is There a Flaw in Bell's Theorem?
- rikjoh
- · Replies 9 ·
Graduate How does entanglement manifest itself?
- Ron Smith
- · Replies 21 ·
Graduate Delayed Choice exp and Cause-Effect
- Gerinski
- · Replies 12 ·
Graduate Why doesn't the electromagnetic field appear in beta decay diagrams?
- ~()
- · Replies 4 ·
Graduate Quantum harmonic oscillator system
- rayveldkamp
- · Replies 2 ·
Graduate Difference between measurement and interaction
- Gerinski
- · Replies 3 ·
Graduate Relativity, confinement and Quantum Mechanics
- DaTario
- · Replies 12 ·
Graduate High Rez EMF Mapping: Seeking Advice
- veld
- · Replies 1 ·
Graduate Where does Unruh radiation appear in quantum electrodynamics?
- exponent137
- · Replies 2 ·
Graduate What Maths Do You Need to Learn Quantum Mechanics?
- yukcream
- · Replies 8 ·
Graduate Does the wavefunction collapse for blind persons?
- Spin_Network
- · Replies 20 ·
Graduate The title of the webpage could be: What is the speed of disentanglement?
- ACG
- · Replies 2 ·
Graduate Can two parallel light rays measure position and momentum without uncertainty?
- autonomous
- · Replies 5 ·
Graduate No-cloning principle vs measurement: entropy cost in detecting entangled spins
- EddieZ
- · Replies 2 ·
Graduate Concerning psi and black holes
- shaan_aragorn
- · Replies 7 ·
Graduate Why is the position expectation value zero for a harmonic oscillator in its ground state?
- matrix5
- · Replies 2 ·
Graduate Electric Charges Scatter Light
- zoobyshoe
- · Replies 7 ·
Graduate Is Quantum Gravity Simply the Result of Space-Time Curvature?
- professor
- · Replies 4 ·
Graduate Half silvered mirror experiments
- erwinskat
- · Replies 3 ·
Graduate Quantum Tunnelling and Spacetime
- εllipse
- · Replies 12 ·
Graduate Is the Heisenberg Uncertainty Principle Limited to Momentum?
- member 11137
- · Replies 4 ·
Graduate How Does Quantum Gravity Connect Relativity and Quantum Mechanics?
- professor
- · Replies 8 ·
Graduate What would Lorentz violation mean for extra dimensions?
- Gravito
- · Replies 2 ·
Graduate On a consequence of quantanization of energy
- Eppur si muove
- · Replies 17 ·
Graduate Where Can I Find Free Resources on the Gross-Pitaevskii Equation?
- MalleusScientiarum
- · Replies 4 ·
Graduate Do Matter Waves Travel Faster Than Light?
- shaan_aragorn
- · Replies 5 ·
Graduate Does quantum theory make bizarre events possible?
- Vast
- · Replies 23 ·
Graduate Understanding Linear Vector Spaces for System Representation
- preet0283
- · Replies 18 ·
Graduate Under what conditions will quantum effects become important for gravity?
- graeme87
- · Replies 17 ·
Graduate Ladder Operator Theorem: Uniting Operators Through Unitary Transformations
- PBRMEASAP
- · Replies 12 ·
Graduate Why does specifying position and velocity fully describe a classical system?
- FunkHaus
- · Replies 6 ·
Graduate How does Ehrenfest's theorem illustrate the correspondence principle?
- yukcream
- · Replies 6 ·
Graduate Trouble understanding how charge density is the amplitude squared
- box
- · Replies 2 ·
Graduate Do pinholes work in double-slit experiments like slits do?
- zoobyshoe
- · Replies 35 ·
Graduate Physical meaning for wavefunction
- jacobi
- · Replies 10 ·
Graduate Why isn't the constant force problem in QM classes?
- pellman
- · Replies 22 ·
Graduate Anomalies of wave particle duality
- wolram
- · Replies 2 ·
Graduate Difficult geometries - Casimir Effect
- Kruger
- · Replies 10 ·
Graduate Is renormalization in QFT hand-waving or a fundamental procedure?
- Ratzinger
- · Replies 3 ·
Graduate Does Young's double slit experiment support Deutsch's multiverse?
- lyapunov
- · Replies 5 ·
Graduate What is the Wick rotation?
- touqra
- · Replies 2 ·
Graduate Direction of a single particle wave
- Gerinski
- · Replies 4 ·
Graduate Teaching Zeeman splitting to students with only intro E&M
- brian0918
- · Replies 8 ·
Graduate Dirac equation and path integral
- Stalebhacine
- · Replies 2 ·
Graduate Time Evolution of Quantum systems.
- Philcorp
- · Replies 17 ·
Graduate Can quantum foam energy be harnessed theoretically?
- Tisthammerw
- · Replies 10 ·
Graduate Path Integral that is valid for a Particle
- Spin_Network
- · Replies 2 ·
Undergrad What is the difference in amplitude between red and blue photons?
- mcgucken
- · Replies 2 ·
Graduate Is the Delayed Choice Experiment Truly Demonstrating Quantum Weirdness?
- DaveC426913
- · Replies 6 ·
Graduate How can electrons in Tonomura's experiment be discrete if position isn't measured?
- Nicky
- · Replies 11 ·
Graduate Applying Quantum Superposition to Spherical Standing Wave Structure
- lconrad
- · Replies 2 ·
Graduate Pointwise convergence of fourier expansion
- hellfire
- · Replies 4 ·
Undergrad Probability / Probability density
- Jelfish
- · Replies 2 ·
Graduate Gravitation, and wavelike particles
- professor
- · Replies 2 ·
Graduate Why does Dirac use weak inequality in constrained quantization?
- kakarukeys
- · Replies 12 ·
Graduate How come that Esinglet < Etriplet and Hund’s rule are both correct?
- Alex83
- · Replies 2 ·
Undergrad Why do clouds form into definite cohesive shapes?
- jnorman
- · Replies 1 ·
Graduate What is the Purest Method for Measuring Low-Energy Particle Momentum?
- Nicky
- · Replies 4 ·