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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Graduate Spin detection probability with rotated measurement apparatus
- rede96
- · Replies 2 ·
Graduate Wave Function: Real vs Imaginary Part
- LarryS
- · Replies 4 ·
Graduate Coherence in spontaneous radiation processes
- Azelketh
- · Replies 3 ·
Graduate What does the bra-ket product of two different energy eigenstates mean?
- amedeo_fisi
- · Replies 5 ·
Graduate Why expectation values don't change in stationary states
- deep838
- · Replies 2 ·
Graduate Quantum state of system before measurement
- soviet1100
- · Replies 17 ·
Graduate What is the electron's mean momentum?
- valle29
- · Replies 1 ·
Graduate Measuring properties of entangled photons
- sanpkl
- · Replies 2 ·
Graduate E=hf as energy of a particle (other than photon)
- bubblewrap
- · Replies 19 ·
Graduate Where Does the Equation for Normalization and Expectation Come From?
- gfd43tg
- · Replies 4 ·
Graduate Is the Kronecker delta linear?
- entropy1
- · Replies 5 ·
Graduate Particle in a box - Momentum and Energy
- marcom
- · Replies 16 ·
Graduate Can the Feynman Path Integral Account for Two Non-Interacting Particles?
- friend
- · Replies 1 ·
High School About light, photon mass and E=mc^2
- akashpandey
- · Replies 5 ·
Graduate Can Multiple Competitive Operators Transform a Quantum State Simultaneously?
- lucas_
- · Replies 3 ·
Graduate Is there a space-independent Schrödinger equation?
- Rimmonin
- · Replies 9 ·
Graduate Why do ket vectors not have magnitudes?
- entropy1
- · Replies 5 ·
Graduate Anticommutation of Fermions and the Lorentz irreps
- Trifis
- · Replies 11 ·
Graduate Zureck's Quantum Darwinism Paper
- bhobba
- · Replies 42 ·
Graduate Properties of fields in quantum field theory
- space-time
- · Replies 5 ·
Graduate Atomic Electron Transition Intervals
- Symmetry777
- · Replies 3 ·
Graduate How Does Angular Momentum Operate in Exponential Form?
- StephvsEinst
- · Replies 3 ·
Graduate Motivations for the C*-algebra of observables?
- TangledMind
- · Replies 4 ·
Graduate How does entanglement affect a particle's wavefunction?
- friend
- · Replies 31 ·
Graduate Wave-particle duality explanation?
- Frane Sazunic
- · Replies 2 ·
Graduate To measure only one qubit of two
- nomadreid
- · Replies 2 ·
Undergrad Photodetectors at the slits in Double Slit Experiment
- noahcharris
- · Replies 9 ·
Graduate Understanding Coherent Interaction in Dicke Model
- lfqm
- · Replies 1 ·
Graduate Feynman Path integrals in space with holes?
- friend
- · Replies 2 ·
Graduate Quantum Coherence - Decoherence Question
- burke142
- · Replies 2 ·
Graduate What does it mean for an operator to converge or diverge?
- Mk7492
- · Replies 5 ·
Graduate Gauge Invariance (QED): How Does the Statement Hold?
- PhyAmateur
- · Replies 8 ·
Graduate Is entanglement in QFT independent of particle interactions?
- friend
- · Replies 17 ·
Graduate Eigenvalues of positions in atomic orbitals
- lucas_
- · Replies 1 ·
Graduate Does the Born Rule in Quantum Mechanics Represent a Joint Probability?
- Jilang
- · Replies 5 ·
Graduate Why does total angular momentum cause energy splitting in Lyman Hydrogen series?
- Goodver
- · Replies 1 ·
Undergrad Dispersion relation and their origins & meaning
- Urmi Roy
- · Replies 3 ·
Graduate Quantum treatment of nonlinear susceptibility
- Konte
- · Replies 8 ·
Graduate Photon Wavefunctions: Is There a Schrodinger Equation?
- space-time
- · Replies 7 ·
Graduate Paths of a free quantum particle
- lavinia
- · Replies 2 ·
Graduate Brainstorming the double slit experiment
- #Thomas#
- · Replies 12 ·
Graduate Permanent magnets: do electrons attract each other?
- steviereal
- · Replies 2 ·
Graduate The black box in Deutsch's algorithm
- nomadreid
- · Replies 16 ·
Graduate Fourier series, Hermitian operators
- Coffee_
- · Replies 19 ·
Undergrad Random switch setting in bell theorem
- rajeshmarndi
- · Replies 3 ·
Graduate Does Helicity or Chirality Govern the Weak Process in Neutrino Interactions?
- bubble
- · Replies 4 ·
Graduate What is Richard Feynman's take on understanding quantum mechanics?
- askAphysicist
- · Replies 20 ·
Graduate If the double slit were performed underwater?
- batmanandjoker
- · Replies 2 ·
Graduate Why does Haag's theorem imply the interaction picture doesn't exist in QFT?
- Qubix
- · Replies 108 ·
Graduate What does the wavevector "k" mean in the Schrödinger eq. ?
- *Himanshu*
- · Replies 3 ·
Graduate Stern Gerlach term in the Pauli Equation
- Mantella
- · Replies 2 ·
Graduate Linear algebra done right for qm
- Ahmad Kishki
- · Replies 8 ·
Graduate Heisenberg Equation: Solving the Poisson Brackets
- Calabi
- · Replies 5 ·
Graduate Classical states and decoherence
- lucas_
- · Replies 91 ·
Undergrad Effect of source slit in Young's Double Slit Experiment
- Raghav Gupta
- · Replies 2 ·
Graduate Can Quantum Particles Meet Everywhere on the Diagonal?
- jk22
- · Replies 4 ·
Graduate Variational method For Helium Atom
- Bishop556
- · Replies 1 ·
Graduate NY Times: Researchers Report Milestone in Quantum Computer
- diogenesNY
- · Replies 2 ·
Graduate How can light absorbing material absorb forever?
- americoperez
- · Replies 7 ·
Graduate Deriving the Hadamard transform from the Fourier transform
- jimmycricket
- · Replies 1 ·
Graduate Chirality for massive neutrinos - right neutrinos - Majorana
- chym
- · Replies 1 ·
Graduate Uncertainty Principle cause infinite wavefunction solutions?
- a dull boy
- · Replies 7 ·
Graduate Does measuring between the slits and screen destroy interference?
- Robert T
- · Replies 19 ·
Graduate Projection operator and measurement
- TrickyDicky
- · Replies 29 ·
Graduate How much time do you have to make the same measurement?
- quantumfunction
- · Replies 5 ·
Graduate Why isn't momentum quantized in quantum mechanics?
- Darren93
- · Replies 2 ·
Graduate How is the vacuum energy affected by nearby particles?
- friend
- · Replies 13 ·
Graduate Ladder operators to find Hamiltonian of harmonic oscillator
- gfd43tg
- · Replies 2 ·
Graduate Finite square well ##\psi(x)## solution for ##-a < x < a##
- gfd43tg
- · Replies 1 ·
Graduate Doubble slit experiment getting bigger
- Tomstein1
- · Replies 4 ·
Graduate What Are the Eigenvalues of Entangled Electron Spins?
- lucas_
- · Replies 8 ·
Graduate Double Slit Probability Amplitude Orientation
- Nick.
- · Replies 2 ·
Graduate Is there a 100% chance of a photon hitting an atom when they interact?
- lucas_
- · Replies 8 ·
Graduate What is the meaning of current in QM?
- hokhani
- · Replies 3 ·
Graduate Eigenfunctions orthogonal in Hilbert space
- gfd43tg
- · Replies 4 ·
Graduate Hilbert space transformation under Poincaré translation
- ddd123
- · Replies 3 ·
Graduate Energy on the RHS of Schrodinger wave equation
- Urmi Roy
- · Replies 5 ·
Graduate Question on validity of Heisenberg's Uncertainty principle
- Shan K
- · Replies 10 ·
Graduate EPR paradox and prediction time
- jk22
- · Replies 31 ·
Graduate Why is an electron ejected from a nucleus with positive protons?
- David Chesnut
- · Replies 1 ·
Graduate Electrons and the Double Slit experiment questions
- tonyxon22
- · Replies 46 ·
Graduate Does Electron Entanglement Affect Total Energy?
- anorlunda
- · Replies 4 ·
Undergrad HCl Energy and Angular Momentum ?
- Rick2015
- · Replies 4 ·
Graduate Property related to Hermitian operators.
- amjad-sh
- · Replies 15 ·
Graduate Measuring a Qubit: Understanding Pauli Matrices
- jimmycricket
- · Replies 5 ·
Graduate Deriving the time-dependent Schrödinger equation solution as a superposition
- gfd43tg
- · Replies 3 ·
Graduate Is Einstein Summation Convention Used in Quantum Mechanics and Relativity?
- dyn
- · Replies 1 ·
Graduate What's the meaning of "Density of radiation between f to f+d
- Sampad Saha
- · Replies 1 ·
Graduate Why each energy state is having only 1 electron?
- Sampad Saha
- · Replies 4 ·
Graduate What do you mean by the term "energy density of radiation "
- Sampad Saha
- · Replies 1 ·
Graduate Why is Wick rotation valid in path integrals with arbitrary field configurations?
- geoduck
- · Replies 2 ·
Undergrad Proton through a Particle Accelerator
- Brannen
- · Replies 3 ·
Graduate Does quantization always work?
- dextercioby
- · Replies 104 ·
Graduate Double asymmetric quantum well
- GalileoGalilei
- · Replies 2 ·
Graduate Question on wave function of free particle
- Shan K
- · Replies 4 ·
Graduate Can Quantum Entanglement Be Blocked
- coljohnhannibal
- · Replies 11 ·
Graduate Harmonic oscillator (quantum vs classical)
- mcheung4
- · Replies 1 ·
Graduate Qm virtual particle force on wire, acrose the universe
- laudas
- · Replies 3 ·
Graduate How is an electric field quantized?
- Sven Andersson
- · Replies 11 ·
Graduate What is the total quantum spin of all particles in the moon?
- Mentz114
- · Replies 7 ·