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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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Quantum Interpretations and Foundations

Particle vs Wave Interpretations of QM
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Undergrad Particle vs Wave Interpretations of QM
Graduate Entangled particles and measurement
  • JK423
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Graduate The particle INSIDE the barrier
  • iLIKEstuff
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Graduate Loschmidt's paradox-II: Quantum Decoherence
  • Dmitry67
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Graduate Amplitude damping with harmonic oscillators
  • haxel
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Graduate Attosecond Spectroscopy, QM, and Atomic Geometry
  • 1Truthseeker
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Graduate Wave particle duality as applied to photon
  • ArielGenesis
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Graduate Variational method in a finite square well
  • jcsimon89
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Graduate Can Operators A and B Always Be Applied to a General State in Tensor Space?
  • Kreizhn
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Graduate How can I get the wave function
  • eoghan
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Graduate Determinism of the wave function
  • nomadreid
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Graduate Defense of pilot wave theory against Motl
  • Ilja
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Graduate Recovering the generator of rotation from canonical commutation relations
  • NewGuy
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Graduate Uncertainty principle and standard deviation.
  • kof9595995
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Graduate Entanglement: Understanding the 2 Electron System States
  • xMonty
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Graduate Since protons are not spherical, are their charge fields non-spherical?
  • jaketodd
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Undergrad What is Field? Understanding its Nature and Properties
  • SANGHERA.JAS
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Undergrad How many electrons in all of 6f oribtals?
  • ppl2pass
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Graduate Solve 1-D Potential Barrier: Electron, Width 8 Angstroms, Depth 12eV
  • rajasekhar_09
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Graduate Solving Entanglement Q: EPR Paradox & Quantum Computing
  • ballzac
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Graduate Eigenstates of the Hamiltonian
  • Master J
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High School How Does a Red Ball Absorb and Reflect Light?
  • xMonty
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Graduate Heisenberg Uncertainty Principle
  • texta
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Graduate Quantum Observer: Can We Perceive Atomic Reality?
  • Gear300
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Undergrad What Causes Saturated Absorption in Materials?
  • KFC
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Graduate QFT Recipe: Outlining the Formal Structure
  • newbee
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Graduate How are electrons considered waves?
  • mahela007
  • · Replies 86 ·
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Graduate Entangled protons in a crystal lattice
  • Jon_Trevathan
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Graduate Probability Current Density or Flux
  • manofphysics
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Graduate Input and Output with a Quantum Computer etc
  • jaketodd
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Graduate A question about probabilities
  • facenian
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Graduate Entanglement and String Theory
  • Qubix
  • · Replies 7 ·
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Undergrad Gaussian Wavepacket Tunnel Through double barrier
  • mehdikhann
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Graduate Representation of second quantization
  • Petar Mali
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Graduate What Does Dominate Mean for Quantum Effects at the Planck Length?
  • Freeman Dyson
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Graduate State/wave function after measurement?
  • z00maffect
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Graduate Susceptibility: Imaginary Part = 0 - What Does it Mean?
  • KFC
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Graduate QFT Lorentz transformation question
  • emob2p
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Graduate Raising and Lowering Operators
  • dFrankCalc
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Graduate Properties and Elements of SO(4) Group in 4 Dimensions
  • jobinjosen
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Undergrad What Are the Best Beginner Resources for Learning Quantum Cryptography?
  • Littlemissshy
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Graduate Discrete and continuous confusion
  • qbslug
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Graduate Deriving Schrodinger Eq. from Complex Plane Wave: Erwin's Way
  • snoopies622
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Graduate Violation of Bell's inequality
  • Descartz2000
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Graduate What are the fundamental information-processes in physics?
  • ConradDJ
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Graduate Can the Bohr Model really prevent electron energy loss?
  • planck42
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Graduate Path Intergral quantization for Relativistic Point like particle?
  • aspidistra
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Graduate Unlock the Mysteries of Quantum Zeno Effect
  • imiyakawa
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Graduate Wave-particle duality of phonons?
  • Demystifier
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Graduate From quantum field theory to quantum mechanics
  • luxxio
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Graduate What is the infrared divergence problem in quantum field theory?
  • Jedi_Sawyer
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Graduate Lie Groups, Lie Algebras, Exp Maps & Unitary Ops in QM
  • quasar_4
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Graduate Speed of light in transparant materials
  • FayeKane
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Graduate Does EPR contradict SR in non-relativistic QM?
  • facenian
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Graduate Violating uncertainity principle
  • cosmicray
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Undergrad How does electron change properties of matter?
  • karolism
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Graduate Double slit experiment with spin
  • abomination5
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Graduate Asymptotic behaviour after perturbation
  • Gerenuk
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Graduate Double slit experiment in a Bubble Chamber
  • JK423
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Undergrad Solving for E(0) in Equation: Vacuum Permittivity
  • FatCat0
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Undergrad How to switch between momentum/real space
  • Sasuke
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Graduate Is Time Discrete or Continuous?
  • strongstring
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Graduate Weinberg Vol 1: Understanding Index Arrangement in (2.4.8) LT Transformations
  • shehry1
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Graduate Constructing Optimal Unitary Operators for Distinguishing Quantum States
  • Kreizhn
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Graduate Delta-function potentials, scattering states
  • AntiStrange
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Graduate Another confusion: How many measurements is many ?
  • kof9595995
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Graduate Discussing Exciting Topics in Quantum Optics
  • Niles
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Undergrad What is the correct order of operations for differentiating r^2 with 2/r*d/dr?
  • timmo567
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Graduate Charge of down, up , electron; (-1/3, 2/3, -1)*3 more natural?
  • Spinnor
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Undergrad Why do electrons in lower atomic orbits have smaller wavelengths?
  • daisey
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Graduate Diagonalization of large non-sparse matrices
  • jsschreck
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Graduate How can energy be quantized with E=hv
  • mahela007
  • · Replies 28 ·
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Graduate Stationary Perturbation Theory
  • tommy01
  • · Replies 1 ·
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Graduate Calculation of probabilities in QM
  • facenian
  • · Replies 7 ·
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Graduate Solving Double Square Well Potential - Physical Chemistry Homework
  • ywkim880801
  • · Replies 1 ·
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Graduate Angular momentum commutator derivation
  • asja
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Graduate Quantum Electronics: Basics, Applications, Semiconductor Lasers
  • Benjamin113
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Graduate Is the entanglement of photons necessary for interference?
  • alexepascual
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Graduate A local deterministic theory that violates Bell's inequaities
  • Count Iblis
  • · Replies 116 ·
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Graduate Intuitive Understanding for Commutation
  • sokrates
  • · Replies 9 ·
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Graduate Regarding the observer effect.
  • vegetto34
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Graduate SUSY computational questions:dots
  • haushofer
  • · Replies 8 ·
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Graduate Eigenvalue plots Tannoudji's Quantum Mechanics Vol. II
  • exciton
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Graduate Calculating the Stark Effect (Spectral line splitting)?
  • HMS-776
  • · Replies 5 ·
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Graduate Time as a series of interactions
  • hwpage
  • · Replies 16 ·
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Graduate What are the equation(s) that determine free electron wave amplitude?
  • jaketodd
  • · Replies 2 ·
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Graduate Ensemble average in quantum computing
  • morphemera
  • · Replies 1 ·
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Graduate Concerning the momentum operator
  • naggy
  • · Replies 4 ·
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Graduate A very simple question re: entangled photons
  • craigmcewan
  • · Replies 17 ·
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Graduate Uncertainty Principle and energy of an electron
  • Xclusive
  • · Replies 3 ·
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Graduate How is flavor symmetry breaking achieved in massless quarks?
  • RedX
  • · Replies 9 ·
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Graduate Does Photoelectric Conversion Affect Momentum Transfer in Solar Sails?
  • sanman
  • · Replies 5 ·
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Graduate Also about the Planck hypothesis
  • snoopies622
  • · Replies 9 ·
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Graduate Wavelength in QM: Definition & Measurement
  • suku
  • · Replies 1 ·
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Graduate Direct Product Basis for Interacting Systems
  • tommy01
  • · Replies 6 ·
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Graduate Short question: Spontaneous emission from Feynman diagrams?
  • blue2script
  • · Replies 1 ·
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Graduate Double Slit Experiment - Blind Observer
  • julianmummery
  • · Replies 15 ·
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Graduate How Does a Quantum Computer Function?
  • cosmicray
  • · Replies 1 ·
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Graduate Quantum Probability: Sets & Complex Numbers
  • closet mathemetician
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Graduate How Does Quantum Superposition Explain Probability in Wavefunctions?
  • Nick R
  • · Replies 2 ·
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Graduate Calculating Eigenkets from Matrix w/ Orthonormal Basis
  • mkbh_10
  • · Replies 1 ·
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