Quantum Physics Forum

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.

Threads

Graduate Invitation: Quantum Man: Richard Feynman's life in science online lecture

  • rhody
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Graduate Novie questions about the double-slit experiment

  • fimaun
  • · Replies 70 ·
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Graduate Are Anyons Possible in Two Dimensions?

  • lugita15
  • · Replies 3 ·
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Graduate Rotation energy in a ball symmertical molecule, why only two axis?

  • DemoniWaari
  • · Replies 4 ·
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Graduate Is electron spin uniquely determined?

  • pmennen
  • · Replies 5 ·
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Graduate Four Fundamental Forces - What Is the Fourth?

  • thetexan
  • · Replies 4 ·
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Graduate How does destructive interference work in the Elitzur–Vaidman bomb tester?

  • Xilor
  • · Replies 23 ·
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Graduate Gravitational force of antimatter

  • murongqingcao
  • · Replies 35 ·
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Graduate Why i in Schrodinger Equation

  • the_pulp
  • · Replies 16 ·
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Graduate Is Space Expansion Driven by Self-Expansion or Dark Energy?

  • murongqingcao
  • · Replies 11 ·
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Graduate Why Use Spherical Coordinates for Hydrogen Atom's Hamiltonian in 3D?

  • fluidistic
  • · Replies 7 ·
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Graduate Why imaginary co-ordinates and complex numbers?

  • aditya23456
  • · Replies 5 ·
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Undergrad Scanning tunnelling microscope - Whats the piezoscanner for?

  • mycotheology
  • · Replies 1 ·
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Graduate Explanation of 6j Symbols (Tetrahedron)

  • Tilde90
  • · Replies 3 ·
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Undergrad What Causes Refraction to Occur?

  • austinv
  • · Replies 3 ·
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Graduate Metal Contact Effect on 1-D particle in a box quantum well

  • theanser
  • · Replies 2 ·
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Graduate Time Travel - Between two Kerr metric black holes w/detached event horizons

  • Dan81
  • · Replies 1 ·
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Graduate What are the four bell states and how do they relate to entanglement swapping?

  • StevieTNZ
  • · Replies 6 ·
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Is It Possible to Find a Romney Voter in an Excited State?

  • Oerg
  • · Replies 9 ·
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Graduate Do wave-functions pass through transparent obstacles?

  • San K
  • · Replies 3 ·
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Graduate Why do photons reflect at the same angle as they hit the mirror?

  • Devils
  • · Replies 5 ·
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Graduate Do quantum jumps between stationary states really exist?

  • Jano L.
  • · Replies 57 ·
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Graduate Why is the wave function not measurable alone?

  • Toyona10
  • · Replies 2 ·
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Undergrad Where can I find recommended books to learn about Quantum Physics?

  • Lexie_AT
  • · Replies 6 ·
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Graduate Why Does Electron Angular Momentum Not Align with External Field?

  • tasnim rahman
  • · Replies 9 ·
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Graduate Does quantum observation mean nothing exists unobserved?

  • freddiy
  • · Replies 28 ·
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Graduate Relation between commutation and quantization

  • osturk
  • · Replies 3 ·
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Undergrad What Is the Conjugate of the Wave Function ψ(x)=R(x)e^(ikx)?

  • chunhui219
  • · Replies 1 ·
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Graduate What does observing mean in quantum mechanics?

  • Mukilab
  • · Replies 3 ·
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Graduate How can you prepare a state with a single photon?

  • Cmertin
  • · Replies 3 ·
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Graduate Why is the Heisenberg picture less popular than the Schrödinger picture?

  • zonde
  • · Replies 9 ·
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Graduate Emilio Santos joins the dark side

  • DrChinese
  • · Replies 40 ·
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Graduate Do we really need a cutoff in QFT

  • geoduck
  • · Replies 6 ·
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Graduate What causes the tilt angle of a precessing proton to change in a magnetic field?

  • dangus
  • · Replies 1 ·
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Graduate A method to detect fermionic magnetic monopoles?

  • johne1618
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Graduate Decoherence and the Density Matrix

  • captain_clogs
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Graduate How Does Gravitational Lensing Work in the Delayed Choice Experiment?

  • bobsmith76
  • · Replies 2 ·
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Graduate Weinberg's non-perturbative approach to renormalizing mass and fields in QFT

  • anthony2005
  • · Replies 11 ·
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Graduate A few questions on quantum physics

  • beatlemaniacj
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Graduate How to find the geometry of singlet/triplet states?

  • rudyzhou2
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Graduate How does the Pauli exlusion principle work?

  • Cibek
  • · Replies 4 ·
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Graduate Does schrodinger equation give complete description of electron?

  • aditya23456
  • · Replies 14 ·
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Graduate The role of lambda in Bell (1964) and experiments

  • Gordon Watson
  • · Replies 1 ·
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Graduate How do excitons relate to radiative recombination?

  • Logio
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Graduate Q regarding Quantum decoherence, r.e. double slit experiment

  • VCortex
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Graduate Quantum entanglement communication

  • idea2000
  • · Replies 5 ·
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Undergrad What Is the Collapse of the Wave Function in Quantum Mechanics?

  • lntz
  • · Replies 1 ·
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Graduate Questions abot magnetic monopoles

  • johne1618
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Graduate Wave functions, i don't get em

  • 3m0k177y
  • · Replies 9 ·
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Graduate Why does observation affect Schrödinger's wave equation?

  • batabek
  • · Replies 28 ·
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Graduate Can we measure position and momentum if a particle emits light?

  • Ralphonsicus
  • · Replies 9 ·
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Graduate Couple of questions on quantum physics from non-physicist

  • gogo_t
  • · Replies 18 ·
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Graduate Assumptions for derivation of Plancks' law

  • tom.stoer
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Graduate Difficulty with relativistic units, eV/c^2

  • yoshtov
  • · Replies 2 ·
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Graduate Wave Function: Physical Basis of 1st Order Derivative

  • phoenixnitc
  • · Replies 7 ·
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High School How matter converted into energy?

  • Ravi Mandavi
  • · Replies 7 ·
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Graduate Heisenbergs thought experiment

  • mycotheology
  • · Replies 3 ·
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Graduate Two simultaneous measures of complementary properties

  • dpa
  • · Replies 10 ·
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Graduate Finding the 3x3 Matrix Representation of SU(2)

  • QuantumLeak
  • · Replies 6 ·
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Graduate Particles and Wigner little groups

  • Mesmerized
  • · Replies 2 ·
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Graduate What does the wavevector \vec{k} mean?

  • mzh
  • · Replies 8 ·
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Graduate Query about Grassmann Variables in Lewis Ryder's book

  • maverick280857
  • · Replies 4 ·
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Graduate Challenges of very high energy physics

  • jfy4
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Graduate Schwartz Distribution Theory in N variables?

  • lugita15
  • · Replies 9 ·
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Graduate Electron density in terms of squares of wavefunctions

  • Physicslad78
  • · Replies 2 ·
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Graduate Object Jumping from Quantum Vibrations Statistical Mechanics

  • the ads 13
  • · Replies 5 ·
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Graduate Quantum particles expand space?

  • Spinnor
  • · Replies 1 ·
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Graduate Braggs law and x-ray crystallography

  • mycotheology
  • · Replies 4 ·
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Graduate Eigen Value, Eigen function -Schrodinger wave equation

  • shaikss
  • · Replies 1 ·
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Graduate Detecting Entanglement in Alice Without Measuring Bob

  • shifty123
  • · Replies 2 ·
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Graduate Comparison of strong nuclear force and electromagnetic force

  • clallier
  • · Replies 1 ·
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Graduate Why is quantum entanglement difficult to realize?

  • Aidyan
  • · Replies 4 ·
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Graduate Energy Conservation versus Quantum and Relativistic Effects

  • Hypatio
  • · Replies 8 ·
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Graduate Is Quantum Entanglement a Means of Evil Communication Across the Galaxy?

  • Causetic
  • · Replies 28 ·
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Graduate Mach–Zehnder interferometer question, path detection

  • msumm21
  • · Replies 7 ·
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Graduate Does an emitted photon exist everywhere on a spherical wavefront until detection?

  • euquila
  • · Replies 3 ·
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Graduate Time-energy uncertainty and virtual particles

  • geoduck
  • · Replies 3 ·
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Graduate Heisenberg ferromagnet and spin waves

  • JohnGringo
  • · Replies 1 ·
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Graduate Simplest example where quantization is unknown

  • quasar987
  • · Replies 9 ·
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Graduate Quantum optics is a reference to a c-number

  • Niles
  • · Replies 2 ·
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High School Electrical activity of an atom

  • AH020387
  • · Replies 3 ·
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Graduate Inverting the quantum cloning of photons

  • DennisN
  • · Replies 1 ·
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Graduate Looking for a not gentle introduction to Q. Physics

  • JamesOrland
  • · Replies 4 ·
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Graduate Objects Disappearing: Is It Possible?

  • DarkFalz
  • · Replies 3 ·
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Graduate How many wave oscillations make up a single photon?

  • rkimble
  • · Replies 1 ·
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Graduate Quantum tunnelling outside the light cone?

  • BWV
  • · Replies 2 ·
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Graduate Why Can't H-Atoms Emit a Single Photon in the 2s to 1s Transition?

  • Demon117
  • · Replies 2 ·
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Undergrad What is negative energy and how does it relate to the capacity for work?

  • avery
  • · Replies 2 ·
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Graduate Non central potential and energy dependence

  • naruto365
  • · Replies 1 ·
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Graduate Neutrino and Black Hole Interaction: Approaching, Passing, or Colliding?

  • conner.ubert
  • · Replies 5 ·
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Undergrad Frequency and wavenumber of two wave equations

  • Lengalicious
  • · Replies 4 ·
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4

Graduate What is an observer, defined by QM?

  • =entropy
  • · Replies 17 ·
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Graduate How can the Higgs Boson induce mass?

  • Mukilab
  • · Replies 3 ·
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Graduate Landau's definition of number of states with energy in an interval

  • Stalafin
  • · Replies 3 ·
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Graduate Direct products and direct sums in QM

  • Amok
  • · Replies 1 ·
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Graduate Bell's derivation; socks and Jaynes

  • harrylin
  • · Replies 97 ·
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Undergrad Trying to understand (E2 - p2c2 = m2c2 )

  • avery
  • · Replies 2 ·
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Graduate Does getting which-way info introduce a phase difference?

  • San K
  • · Replies 3 ·
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Graduate Electron oscillation between states

  • jjurbanus
  • · Replies 5 ·
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Graduate Degeneracy of Hydrogen atomic orbitals with different l-values but same n-value

  • octopus
  • · Replies 5 ·
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