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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High School Shor's algorithm on a Google Sheet
- Bob Walance
- · Replies 13 ·
High School Is the Heisenberg Uncertainty Principle a result of measurement inadequacies?
- DesertFox
- · Replies 13 ·
Undergrad Interpreting ##A^{\mu}(x)|0\rangle## and ##\psi (x) |0\rangle##
- Ryder Rude
- · Replies 5 ·
Graduate What are the unusual absorption features observed in the EIT signal of 85Rb gas?
- wangvivi
- · Replies 1 ·
Undergrad Black hole singularity vs. quantum mechanics
- Jyrioffinland
- · Replies 6 ·
Graduate Current Status of Electromagnetic Triviality
- Son Goku
- · Replies 9 ·
High School Particle Function? Particle Equation?
- MevsEinstein
- · Replies 21 ·
Graduate In What Space Does Quantum Spin Take Place
- Hornbein
- · Replies 10 ·
Undergrad Partition function for continuous spectrum
- HomogenousCow
- · Replies 2 ·
Graduate Energy Levels and Wave Functions of Identical Particle Systems
- Rafaelmado
- · Replies 1 ·
Graduate Why can't a ρ0 meson decay into two neutral pions?
- Rafaelmado
- · Replies 1 ·
Undergrad What happens to the other particle in an entanglement state?
- accdd
- · Replies 8 ·
Undergrad Can entanglement occur in distant galaxies according to NRQM and QFT?
- accdd
- · Replies 6 ·
Undergrad Majorana zero modes observed by Microsoft?
- atyy
- · Replies 2 ·
Undergrad Photon interference and beamforming
- antonantal
- · Replies 64 ·
Graduate Group velocity calculation in EIT slow light experiment
- wangvivi
- · Replies 8 ·
High School Is All Motion Discrete or Continuous in QM?
- erobz
- · Replies 19 ·
Graduate Is there a generalized second law of thermodynamics?
- Heidi
- · Replies 15 ·
Undergrad Dimensions of quantum cell automata's state space
- Jaime_mc2
- · Replies 1 ·
Graduate What is the cause of the Mexican hat potential of the Higgs field?
- JandeWandelaar
- · Replies 30 ·
Graduate Relationship between Wilson's RG and the Callan-Symanzik Equation
- gsschandu
- · Replies 2 ·
Graduate Are POVMs fundamental or require Naimark's theorem and ancillas?
- jbergman
- · Replies 2 ·
Graduate Measurement of the phase of coherent states
- Jamister
- · Replies 9 ·
Undergrad Time of flight measurement uncertainty
- Malamala
- · Replies 3 ·
High School How does the EPR paradox work?
- EduardoToledo
- · Replies 4 ·
Graduate What is the role of Slater determinants in quantum chemical methods?
- Greg Bernhardt
- · Replies 1 ·
Graduate Quantum Hall Effect Basics: Topological Insulator & Semi-Metal
- chow_dhury
- · Replies 2 ·
High School Double slit experiment combined with Stern-Gerlach
- Nocturnial
- · Replies 1 ·
High School Is a particle's wave path the planar projection of a helix?
- Bach33
- · Replies 24 ·
Graduate Has a calculation of the vacuum energy density been done with strings?
- JandeWandelaar
- · Replies 11 ·
High School How does a spinor affect a wave function?
- justpeeking
- · Replies 3 ·
High School Spacetime, quantum field, and aether
- Mohd Abdullah
- · Replies 9 ·
Graduate Off-Forward quark-quark amplitude in momentum space
- Diracobama2181
- · Replies 1 ·
Undergrad Brownian motion and continuity
- DesertFox
- · Replies 23 ·
Undergrad Does photocurrent depend on light frequency in the photoelectric effect?
- pkc111
- · Replies 5 ·
Graduate Expectation value in Heisenberg picture: creation and annihilation
- Bruno Cardin
- · Replies 1 ·
High School Does superposition mean the cat is in two states at once?
- evelk86
- · Replies 2 ·
Undergrad The quantum state of the Universe
- accdd
- · Replies 6 ·
Undergrad The general structure of relativistic QFTs
- vanhees71
- · Replies 87 ·
Undergrad Solving a Particle on the Surface of a Sphere: Obtaining Eigenvalues
- Salmone
- · Replies 4 ·
Undergrad Can the Helium atom be solved by other methods?
- physwiz222
- · Replies 6 ·
Undergrad Electron Indistinguishability and Repulsion
- Dario56
- · Replies 44 ·
High School Wave-particle duality of atoms and molecules
- DesertFox
- · Replies 38 ·
Undergrad Strange Hamiltonian of two particles on the surface of a sphere
- Salmone
- · Replies 1 ·
Undergrad Wavefunction of ionized hydrogen electron
- Physicsman88
- · Replies 9 ·
Undergrad Do Bell Experiments Show Local Overlap of Wave Functions Before Measurement?
- msumm21
- · Replies 72 ·
Undergrad Expansion of Space: Questions on How the Universe Works
- Martyn Arthur
- · Replies 1 ·
Undergrad Can Boltzmann brains extract unlimited energy from quantum fluctuations?
- JuneSpring25
- · Replies 15 ·
Undergrad Is acceleration quantized in quantum field theory?
- accdd
- · Replies 10 ·
Graduate The Generalized Capabilities of the Standard Model Lagrangian?
- JohnH
- · Replies 6 ·
High School Copenhagen Interpretation - Superposition - confirmed?
- Jacob Peters
- · Replies 27 ·
Undergrad Wavefunction properties tunneling effect
- Salmone
- · Replies 4 ·
Undergrad Geiger counters and measurement
- jeeves
- · Replies 99 ·
Undergrad Logical implication vs physical causality
- entropy1
- · Replies 8 ·
Undergrad Derive the probability of spin at arbitrary angle is cos( )
- Sparky_
- · Replies 6 ·
Graduate Secular Approximation of Dipole-Dipole Hamiltonian
- TeamMate
- · Replies 2 ·
Undergrad Separability of a Hamiltonian with spin
- Salmone
- · Replies 1 ·
Graduate S-Matrix in Quantum Field Theory
- gremory
- · Replies 2 ·
Undergrad Why does doping make resonating valence bonds (singlet pairs) mobile?
- Faizan Samad
- · Replies 2 ·
Undergrad How Do You Break Quantum Entanglement Bonds?
- VictorMedvil
- · Replies 7 ·
Undergrad Is there spin-charge separation in 2d?
- Faizan Samad
- · Replies 1 ·
Undergrad Linear combination of states with Pauli's principle
- Salmone
- · Replies 9 ·
Undergrad What does the pi product symbol mean in Feynman path integrals?
- Sophrosyne
- · Replies 1 ·
Undergrad Separable Hamiltonian for central potential
- Salmone
- · Replies 21 ·
Graduate Power series in quantum mechanics
- gremory
- · Replies 1 ·
High School Derivative of a particle’s energy
- Guineafowl
- · Replies 18 ·
High School Statistical Independence in Quantum Mechanics
- Lynch101
- · Replies 22 ·
Undergrad Non-zero diagonal elements in superconducting qubit transition dipole matrix
- approx12
- · Replies 1 ·
High School Is Quantum Field Theory Understandable Without Advanced Mathematics?
- Tommy White
- · Replies 17 ·
Graduate 1D Quantum Well - Different width "naming" gives different result ?
- Solmyros
- · Replies 2 ·
Undergrad What is the Role of the Radial Position Operator in Quantum Mechanics?
- Kashmir
- · Replies 21 ·
Undergrad Schrodinger Equation from Ritz Variational Method
- Samama Fahim
- · Replies 1 ·
Graduate Computing Correlation functions
- gremory
- · Replies 1 ·
Undergrad Understanding Landau Levels for 3D Fermionic Gas in Magnetic Field
- Sunny Singh
- · Replies 4 ·
High School Low magnification, high resolution, experiments on photon sieves?
- ThiagoMNobrega
- · Replies 1 ·
High School Wave function won't collapse under a microscope?
- ThiagoMNobrega
- · Replies 17 ·
Undergrad What is spin related to in quantum mechanics?
- accdd
- · Replies 1 ·
Undergrad Role of Fine Structure Constant in Q.E.D.?
- LarryS
- · Replies 8 ·
Undergrad Blender Particle Photon Simulation (interesting results w soft bodies)
- ThiagoMNobrega
- · Replies 6 ·
Undergrad Why don't we consider ##E_{com}## while solving a two body problem?
- Kashmir
- · Replies 2 ·
Graduate Homodyne detection quantum state tomography
- Jamister
- · Replies 1 ·
Graduate POVMs for Infinite Dimensional Hilbert Spaces
- jbergman
- · Replies 6 ·
Undergrad Why not use degenerate eigenstates individually in perturbation theory
- Kashmir
- · Replies 10 ·
Undergrad Simulating physics: the current status of lattice field theories
- ErikZorkin
- · Replies 2 ·
Undergrad Finding ##S_x## eigenstate using experiments
- Kashmir
- · Replies 4 ·
Undergrad Conventional description of the matter wave
- George444fg
- · Replies 1 ·
Graduate Molar heat capacity of CO2 is too high. Why?
- Philip Koeck
- · Replies 1 ·
Graduate What is meant by pruning and enrichment?
- user366312
- · Replies 1 ·
Undergrad Particle on a cylinder with harmonic oscillator along z-axis
- Salmone
- · Replies 2 ·
Undergrad Why Can We Use This Mathematical Formula for Mean Value of Measurement?
- ofirg55
- · Replies 6 ·
High School Is gravitized quanta the solution rather than quantum gravity?
- bbbl67
- · Replies 3 ·
Undergrad Can you tell the difference between two neutrons in an alpha particle?
- wasong
- · Replies 5 ·
Graduate Position basis in Quantum Mechanics
- pabloweigandt
- · Replies 8 ·
High School Are zero-point energy and inertia incompatible?
- jaketodd
- · Replies 4 ·
Undergrad Can someone explain why momentum does not commute with potential?
- coolpoke0908
- · Replies 2 ·
Undergrad Deriving the Commutator of Exchange Operator and Hamiltonian
- Samama Fahim
- · Replies 1 ·
Undergrad Modern Atom Model: Is It Perpetual Motion?
- dom_quixote
- · Replies 5 ·
High School Can gravity convert light into other particles?
- rgtr
- · Replies 4 ·
Undergrad Hamiltonian of a particle moving on the surface of a sphere
- Salmone
- · Replies 2 ·
Undergrad Matrix element in problem with hydrogen atom
- Salmone
- · Replies 2 ·