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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Undergrad Why do we use i to represent phasors and/or vectors?
- friendbobbiny
- · Replies 1 ·
Graduate Experimental loophole-free violation of a Bell inequality
- DrChinese
- · Replies 2 ·
Graduate Momentum eigenfunctions proof and Fourier Transform question
- Joker93
- · Replies 14 ·
Graduate Delayed choice as a quantum logic circuit
- Strilanc
- · Replies 5 ·
Graduate Knowing which-path information by calculating distance time?
- Vloodz
- · Replies 10 ·
Graduate No-cloning and stimulated emission
- greypilgrim
- · Replies 32 ·
Graduate In Bell are pairs independent?
- jk22
- · Replies 10 ·
Graduate Sources to learn about Berry phases and Adiabatic Theorem
- Joker93
- · Replies 4 ·
Graduate Collisional excitation: selection rules for rotations?
- uselesslemma
- · Replies 1 ·
Graduate Quantum Property: Can a Particle Have It Both Ways?
- Einstein's Cat
- · Replies 1 ·
High School Can a particle exist without time
- DaMeekie
- · Replies 10 ·
Graduate Schrodinger equation numerical solution
- aaaa202
- · Replies 4 ·
Graduate Divergence of integral over vacuum energies (Free field)
- soviet1100
- · Replies 2 ·
Graduate Why does the intensity of Bremsstrahlung radiation increase with lower energy?
- Shailesh Pincha
- · Replies 1 ·
Graduate Representations of Poincare group
- Andre' Quanta
- · Replies 9 ·
Graduate Conservative physical quantities
- KostasV
- · Replies 4 ·
Graduate Separability of Hilbert Spaces
- Andre' Quanta
- · Replies 3 ·
Graduate Fields as operator valued distributions
- naima
- · Replies 11 ·
Graduate Does empty space have a mass effect?
- PGTART
- · Replies 1 ·
Graduate What is the role of spherical harmonics in quantum mechanics?
- KostasV
- · Replies 2 ·
High School Speed of interaction between entangled particles
- TotalNovice
- · Replies 15 ·
Graduate Does time exist at Quantum level?
- Gaz1982
- · Replies 38 ·
Graduate Is Decoherence essentially a measurement? Then what?
- rasp
- · Replies 3 ·
Graduate Does exchange of identical particles lead to new state?
- zhanhai
- · Replies 7 ·
Graduate Why is QFT insensitive to absolute energies?
- "Don't panic!"
- · Replies 9 ·
Undergrad Double slit particle distribution with convex lens?
- Nav
- · Replies 1 ·
Graduate Vacuum fluctions and the Casimir Effect
- HeavyWater
- · Replies 3 ·
Graduate State Vectors as elements of Hilbert Space
- devd
- · Replies 8 ·
Undergrad Entanglement Swapping and measurement vs. observation
- quantumfunction
- · Replies 24 ·
Graduate Could we calculate the number of Planck flops in a human lifetime?
- Jimster41
- · Replies 6 ·
Graduate Interacting Quantum Field Theory: Ground State
- Gedankenspiel
- · Replies 4 ·
Graduate Total spin of triplet and singlet states
- K448
- · Replies 4 ·
Graduate Does Black Hole Quantum Complexity Challenge Our Understanding of Wormholes?
- Justice Hunter
- · Replies 2 ·
Graduate Confusion about Rayleigh-Jeans law
- En Joy
- · Replies 7 ·
Graduate Why do changing magnetic fields produce electric fields?
- Jeff Rosenbury
- · Replies 6 ·
Graduate What is the condition for a particle to go into a square potential well?
- learner@123
- · Replies 12 ·
Graduate Bell inequality violated with classical light in experiment
- DirkMan
- · Replies 4 ·
Graduate Who would be interested in an EPR thought experiment?
- votingmachine
- · Replies 18 ·
Graduate How Can Gravitons Escape A Black Hole?
- Ryan Reed
- · Replies 14 ·
Graduate Thought double-slit experiment
- En Joy
- · Replies 5 ·
Graduate No interference pattern in double slit when there is a lens?
- Nav
- · Replies 1 ·
Graduate Question on the photoelectric effect?
- mklaben15
- · Replies 1 ·
Graduate Is Quantum Mechanics an artifact of our ignorance?
- Noctisdark
- · Replies 23 ·
Graduate Observational Effect: Defining Particle Position
- Einstein's Cat
- · Replies 3 ·
Graduate Flame colors - where's the chlorine?
- wizzart
- · Replies 2 ·
A New Thread: 5,000th Post & New Paper!
- Demystifier
- · Replies 16 ·
Graduate Do observables for polarizers at different angles commute?
- greypilgrim
- · Replies 4 ·
Graduate Uncertainty principle if position is restricted
- greypilgrim
- · Replies 4 ·
Insights You Will Not Tunnel Through a Wall - Comments
- ZapperZ
- · Replies 63 ·
Undergrad Why electrons never make contact with the nucleus?
- Med242
- · Replies 11 ·
Graduate SU(2) Rotation & Spinors: Connected?
- HowardTheDuck
- · Replies 2 ·
Graduate Quantum locking -- Good sources of info?
- J35T3R
- · Replies 1 ·
Graduate Question about quantum superposition in CMB photons
- Gerinski
- · Replies 2 ·
Graduate Schrodinger equation - stationary states
- miriteva
- · Replies 6 ·
Graduate A question about commutaiton between operator
- hgnk708113
- · Replies 5 ·
Graduate A "false" superimposed qubit vs a "real one"
- Julian Blair
- · Replies 4 ·
Graduate Observed interference in afshar's double slit experiment?
- Nav
- · Replies 1 ·
Graduate Is There One Electromagnetic Field in the Universe or Multiple Fields?
- guywithdoubts
- · Replies 19 ·
Graduate Noetherian currents and the Surface term
- cpsinkule
- · Replies 2 ·
Graduate Particle waves through a potential barrier
- DivGradCurl
- · Replies 4 ·
Graduate Physical difference between singlet and triplet states
- Wminus
- · Replies 2 ·
Graduate What do you understand about quantum entanglement?
- Armando Valle
- · Replies 3 ·
Graduate In what sense do within-H-atom electrons "move" at ~1/137c?
- Diploria
- · Replies 19 ·
Graduate Is it possible to travel to parallel universes?
- nivak
- · Replies 6 ·
Graduate Finding coefficients of superposition of states
- bznm
- · Replies 8 ·
Graduate Parallel Universe: Do Many Possibilities Dissolve?
- qudrat ullah
- · Replies 14 ·
High School The Electron's First Spin: An Overview
- faiziqb12
- · Replies 28 ·
Graduate Symmetric and Antisymmetric Depiction
- Davephaelon
- · Replies 2 ·
Graduate Spin 1/2 Particle: Uncertainty Principle Explained
- Molar
- · Replies 1 ·
Graduate Representation of spin matrices
- bznm
- · Replies 2 ·
Graduate Can Quantum Mechanics Explain the Fate of the Bucket in a Thought Experiment?
- armchairguy
- · Replies 16 ·
Graduate Implications of the no-clone theorem
- carllacan
- · Replies 2 ·
Graduate Calculation of the running coupling
- Trifis
- · Replies 4 ·
Graduate Commutation between operators of different Hilbert spaces
- Wminus
- · Replies 2 ·
Undergrad High Spin: Unraveling the Mystery of Mono Atomic Gold
- Mr. Mackey
- · Replies 1 ·
Graduate Is the speed of light in a vacuum affected by an electric field?
- HeavyWater
- · Replies 11 ·
Undergrad Why photons reflect off glass?
- Christian Grey
- · Replies 7 ·
Graduate Atomic dipole moment for a superposition state
- DivGradCurl
- · Replies 1 ·
Graduate What is the problem with point particles?
- nnerik
- · Replies 11 ·
Graduate Why Are There Blank Spaces in Quantum Mechanics Orbitals?
- Danilo Boskovic
- · Replies 3 ·
Graduate Mathematics of Quantum Mechanics
- Agreegate
- · Replies 2 ·
Graduate Heisenberg uncertainty question
- lightoflife
- · Replies 3 ·
Graduate Law of baryon conservation questions
- lightoflife
- · Replies 1 ·
Graduate EPR & Bell: What's Wrong with My Scenario?
- theargosy
- · Replies 13 ·
Graduate Hamilton Operator for particle on a circle -- Matrix representation....
- JonnyMaddox
- · Replies 1 ·
Graduate Dirac Relativistic Wave Equation
- John Rampton
- · Replies 5 ·
Graduate Are Quantum Physics & Classical Physics incompatible?
- Rolliet
- · Replies 26 ·
Graduate Derivation of T1 term in Bloch equations
- kcant6453
- · Replies 5 ·
Graduate Quantum Biology: Life on the Edge - Where is the Electron?
- rasp
- · Replies 15 ·
High School Is quantum physics a theory of unknowledge ?
- jk22
- · Replies 4 ·
Graduate Why do Black Holes evaporate due to Hawking radiation?
- lightoflife
- · Replies 6 ·
Graduate Using GHz multi-particle entanglement for FTL communication
- r20
- · Replies 16 ·
Graduate Do X-Ray Tracks in Photo Film Suggest Quantum Entanglement?
- Swamp Thing
- · Replies 6 ·
Graduate Can I Make a Casimir Device at Home?
- Electro97
- · Replies 1 ·
Graduate Does entangled polarized photon get through filter?
- entropy1
- · Replies 5 ·
Graduate Total angular momentum operator for a superposition
- DivGradCurl
- · Replies 10 ·
Graduate Harmonic oscillator coherent state wavefunction
- quantum539
- · Replies 4 ·
Graduate Field Excitations and their Collisions
- Ryan Reed
- · Replies 1 ·
Graduate Coherence length of a single photon
- DaTario
- · Replies 5 ·
Graduate Why do we need a normalisation constant for wavefunctions?
- Molar
- · Replies 4 ·