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
Undergrad Potential energy at maximum amplitude in Morse potential ground state
- Salmone
- · Replies 2 ·
Undergrad With chips having 2 nm transistors, are we at the end of Moore's Law?
- swampwiz
- · Replies 2 ·
Undergrad Counterfactual quantum computation on interferometer
- artis
- · Replies 1 ·
High School What is a non-local Hamiltonian?
- lindberg
- · Replies 20 ·
Undergrad Determining the Number of Points in the n-Space
- Dario56
- · Replies 16 ·
Graduate Can local conservation be verified experimentally?
- Demystifier
- · Replies 12 ·
Undergrad Has Google Truly Achieved Quantum Supremacy?
- bhobba
- · Replies 9 ·
Undergrad Definition of functional derivative
- PreposterousUniverse
- · Replies 4 ·
Graduate Quantum Properties of Quasi Static Electric Fields
- Javelin
- · Replies 1 ·
High School What sort of an experiment can refute QM or QFTs?
- MathematicalPhysicist
- · Replies 124 ·
Undergrad Is the Energy Expectation Value Always Real and Above a Minimum Potential?
- dyn
- · Replies 14 ·
High School Is the concept of "potential" just a mathematical model?
- zb23
- · Replies 21 ·
Undergrad Quantum computation and entropy
- antonantal
- · Replies 39 ·
High School Questions about the position of the particle
- SLSPS
- · Replies 6 ·
High School Why do subatomic particles change what they do when observed?
- curiosity1
- · Replies 3 ·
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 ·