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 Quick Uncertainty in an Average Question
- peppies
- · Replies 1 ·
Graduate EM Field strength and plane waves
- parton
- · Replies 2 ·
Graduate Partition function for two harmonic potential wells with different force constants
- DanPhysChem
- · Replies 1 ·
Graduate Heisenberg uncertainty - uncertainty about its meaning
- studious
- · Replies 50 ·
High School What does it mean that two particles have opposite spins?
- hurricane89
- · Replies 10 ·
Graduate Laser question (Confinement factor and quantum well thickness)
- oronno
- · Replies 2 ·
Graduate Why do particles have spin 1/2 and what do negative spins mean?
- loup
- · Replies 7 ·
Graduate Von Neumann machine for the Universe
- p764rds
- · Replies 13 ·
Graduate Uncertainty with Hesienberg’s Uncertainty
- mysearch
- · Replies 3 ·
Graduate SF-Mott insulator transition and Wigner-mermin theorem
- wdlang
- · Replies 2 ·
Graduate Where Was the Observer Detector in the Double-Slit Experiments?
- SDetection
- · Replies 69 ·
Graduate Do virtual photons Doppler-shift?
- alxm
- · Replies 4 ·
Graduate How do I find the time evolution of a state with an operator in the Hamiltonian?
- KFC
- · Replies 5 ·
Undergrad Why is Fourier Integral Meaningless for f(x)=A*cos(ax)?
- caduceus
- · Replies 8 ·
Graduate Would gravity detect which slit in the double slit experiment?
- spikenigma
- · Replies 21 ·
Graduate Superposition/electron energy levels
- granpa
- · Replies 1 ·
Graduate What Are the NMR Operators I_x, I_y, and I_z?
- Kreizhn
- · Replies 10 ·
Graduate Helium Energy Level Diagram Analysis w/ Bohr Theory
- MonsieurWise
- · Replies 2 ·
Graduate Solving Perplexing Commutator for Simplification
- waht
- · Replies 3 ·
Graduate What Is a Noncommutative Integral and How Does It Impact Quantum Field Theory?
- zetafunction
- · Replies 1 ·
Graduate Why Does the HUP Spectrum Favor Particles Over Flows?
- Dmitry67
- · Replies 2 ·
Graduate Matter + Antimatter Bound State Mathematics
- Rade2
- · Replies 4 ·
Graduate Why Are IR and UV Divergences the Same?
- zetafunction
- · Replies 5 ·
Graduate How far apart can entangled electrons be, and how was this determined?
- hurricane89
- · Replies 5 ·
Graduate Inverse spectral problem in QM
- zetafunction
- · Replies 5 ·
Graduate Switching to a Matrix Hamiltonian - Conceptual Issues
- sokrates
- · Replies 3 ·
Undergrad Fair dice and two slit experiment
- Pjpic
- · Replies 3 ·
Undergrad Does observation collapse create reality 25 times per second?
- physics_boi95
- · Replies 8 ·
High School How Did Galileo's Experiment Measure the Speed of Light?
- Questioner...
- · Replies 3 ·
Graduate Tunneling effect by means of the instantons
- Davide86
- · Replies 2 ·
Graduate Degenerate basis, incomplete set of operators
- Pengwuino
- · Replies 2 ·
Graduate Could Our Universe Be Just a Brane in a Much Larger Reality?
- florin3k3
- · Replies 10 ·
Graduate Can fractals unify string theory and quantum physics?
- chawdawg
- · Replies 7 ·
Graduate Let us assume Feynman was wrong.
- Spinnor
- · Replies 102 ·
Graduate What is the Bloch sphere representation useful for?
- mtak0114
- · Replies 2 ·
Graduate Planck's constant equaled 1 instead of 6.63x10^-34
- flip92
- · Replies 11 ·
Graduate How Real Are Virtual Particles?
- Super_Jew
- · Replies 71 ·
Graduate Showing that wave functions are continuous
- AUMathTutor
- · Replies 12 ·
Graduate What are CP maps in QM good for?
- mtak0114
- · Replies 1 ·
Graduate Physical difference between singlet and triplet electron states
- Marthius
- · Replies 24 ·
Graduate Pure spin current vs. spin-polarized charge current?
- sokrates
- · Replies 1 ·
Graduate Is the Future Always Uncertain According to Quantum Mechanics?
- Naty1
- · Replies 4 ·
Graduate A lttile though on multiverses.
- Gedatsu
- · Replies 4 ·
Graduate Eigenvalues, eigenvectors and eigenfunctions in quantum mechanics
- oliver.smith8
- · Replies 3 ·
High School Why was the double slit experiment originally designed?
- florin3k3
- · Replies 13 ·
Graduate Find some clearly written books about quantum physics
- Cyberbrain
- · Replies 3 ·
High School Do electrons and protons annihilate when they collide?
- Invinoveritas
- · Replies 24 ·
Graduate Do particles traveling backwards in time have opposite charges?
- electrogluon
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Graduate Emission line width and the uncertainty principle
- EnSlavingBlair
- · Replies 14 ·
Graduate Finding averages of observables of Bell states
- poonintoon
- · Replies 1 ·
Graduate Does the brain use quantum mechanics?
- Albert George
- · Replies 7 ·
Graduate When is a hamiltonian separable and when isnt it?
- benbenny
- · Replies 7 ·
Graduate Can Infinite Universes Allow for Reincarnation?
- SpaceGuy50
- · Replies 1 ·
Graduate Why can we treat the proton as stationary in the hydrogen atom?
- elect_eng
- · Replies 4 ·
Graduate Do Quantum Orbitals in the Atom Overlap at Different Energy Levels?
- Quantom
- · Replies 8 ·
Graduate Reps of lorentz group and pauli and gamma matrices
- bartadam
- · Replies 9 ·
Graduate He+ Energy Level Diagram: Interaction Effects?
- MonsieurWise
- · Replies 3 ·
Graduate What Happens to One Electron in an Entangled Pair Affects the Other?
- Quantom
- · Replies 1 ·
Graduate Thought I had on the nature of randomness.
- ebon
- · Replies 6 ·
Graduate Is it possible to derive HUP from SE?
- sokrates
- · Replies 31 ·
High School Triplet State Explanation for Helium Electron Transitions
- MonsieurWise
- · Replies 6 ·
Graduate Amit Goswami's monistic idealism and consciousness in quantum physics
- Paolo 2008
- · Replies 2 ·
Graduate Is the Conservation of Angular Momentum in Quantum Mechanics Only Probabilistic?
- fermi
- · Replies 3 ·
Graduate Schrodinger Equation and wavefunction collapse
- feynmann
- · Replies 10 ·
Graduate Photons and Double Slit Experiment
- daisey
- · Replies 1 ·
Graduate Understanding Elastic Scattering in Electron-Electron Interactions
- sokrates
- · Replies 2 ·
Graduate Does entanglement violate special relativity?
- Unredeemed
- · Replies 107 ·
Graduate What is a completeness relation in quantum mechanics?
- nolanp2
- · Replies 4 ·
Graduate Energy eigenvalues for charged particle in harmonic potential with electric field
- ee_mike
- · Replies 4 ·
Graduate Was Bohr's version of quantum mechanics deeply flawed
- feynmann
- · Replies 16 ·
Graduate Massive and massless modes of the anchored string.
- Spinnor
- · Replies 1 ·
Graduate Finding Maximum Dispersion of Total Number (N)
- KFC
- · Replies 1 ·
Graduate Basic Quantum Transport Question
- carbon9
- · Replies 1 ·
Graduate Anomoly in calculations/standard value for electron energy levels
- EnSlavingBlair
- · Replies 5 ·
Graduate How does ψ'(x') = S(a)ψ(x) relate functions at different arguments?
- aiqun
- · Replies 2 ·
Graduate How fundamental is inverse square law?
- guhan
- · Replies 5 ·
Graduate Physicist's Double Slit Experiment: How is it Possible?
- Forestman
- · Replies 2 ·
Graduate The Clebsch-Gordan Theorem: Proving the Symmetric Spinor Tensors as IRR of SU(2)
- sshaep
- · Replies 2 ·
Graduate How can measuring particle handedness transmit information faster than light?
- kashiark
- · Replies 23 ·
Undergrad How to picture atomic/electron orbitals
- dolimitless
- · Replies 20 ·
Graduate Four or Five fundamental forces
- DaTario
- · Replies 39 ·
Graduate [Q]Queation about Photon and Electric discharge.
- good_phy
- · Replies 1 ·
Graduate Can Photon Wave Properties Be Misunderstood in the Double-Slit Experiment?
- ballzac
- · Replies 25 ·
Graduate Does observing a quantum experiment change its outcome?
- Albert George
- · Replies 2 ·
Undergrad What is Hardy's paradox in simple terms?
- gonzo
- · Replies 7 ·
Graduate Second-Order Field Strength Energy Spectrum of Spherical Shell
- eman2009
- · Replies 1 ·
Graduate Discrete Analog of Schrodinger Equation?
- Heston
- · Replies 1 ·
Graduate Is SU(2) for spin 1/2 related to the weak interaction gauge group?
- captain
- · Replies 1 ·
Graduate Number operator on number states vs thermal states
- KFC
- · Replies 7 ·
Graduate Youngs slits in the particle frame
- Brane Dead
- · Replies 2 ·
Graduate Are Photons and Electrons Indistinguishable Based on Their Wavefunction Alone?
- chrisphd
- · Replies 6 ·
Graduate The Line That Seperates QM and Relativity?
- 3CKPilot
- · Replies 23 ·
Graduate Double slit and quater wave plates
- PenKnight
- · Replies 1 ·
Graduate What do these states mean physically?
- KFC
- · Replies 1 ·
Graduate When can the time-independent Schrodinger be used?
- sokrates
- · Replies 2 ·
Graduate Time-varying expectation values
- Niles
- · Replies 4 ·
Graduate Thought Experiment Involving Quantum Entanglement
- Dahaka14
- · Replies 9 ·
Graduate Klein gordan equation in electromagnetic potential
- sp105
- · Replies 15 ·
Graduate Feshbach Resonance: Links, Articles, Books for Applications
- quZz
- · Replies 2 ·
Graduate Forces unified at the time of the big bang
- nuby
- · Replies 6 ·