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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Undergrad Symmetry transformation in Heisenberg vs Schrödinger Picture
- hgandh
- · Replies 2 ·
High School Does ψ*∇²ψ = ∇ψ*·∇ψ for wave functions?
- DuckAmuck
- · Replies 2 ·
Graduate Why decoherence doesn't resolve the measurement problem
- Auto-Didact
- · Replies 69 ·
Undergrad Confusion about the quantum field Lorentz transformation
- HomogenousCow
- · Replies 3 ·
Undergrad If philosophical discussions are not allowed
- BWV
- · Replies 16 ·
Undergrad CSCO of Total Angular momentum
- QuantumDuality
- · Replies 1 ·
High School Does a shared wave function guarantee identical outcomes for entangled photons?
- jeremyfiennes
- · Replies 10 ·
High School Does Entangled Particle Detection Prove the Spooky Action at a Distance?
- ScienceMike33
- · Replies 18 ·
High School Would there be an upper limit to density in QM?
- benorin
- · Replies 3 ·
Graduate Is the visualization of quantum fields as harmonic oscillators accurate?
- Geofleur
- · Replies 1 ·
Graduate How to explain the nuclear radius of Uranium 238 using QM
- JD_PM
- · Replies 2 ·
Undergrad What is Stochastic Quantum Mechanics (in simple terms)?
- john taylor
- · Replies 2 ·
Graduate Schrödinger's cat: what's the state?
- Peter Morgan
- · Replies 17 ·
Undergrad Why is the wavefunction an integral over k in Gasiorowicz?
- Arman777
- · Replies 6 ·
High School Does the Universe Consist of Information Rather Than Stuff?
- entropy1
- · Replies 4 ·
High School Thought experiment -- A radioactive decay detector and randomness
- dRic2
- · Replies 19 ·
Graduate What is the Vector Manipulation Formula for Elastic Scattering Angle?
- JD_PM
- · Replies 4 ·
Graduate Confusing eigensolutions of a wave function
- Yourong Zang
- · Replies 3 ·
Graduate Measurement and the Conservation of Momentum
- Bernard Brault
- · Replies 6 ·
Undergrad Uncertainty of momentum and position
- manojr
- · Replies 1 ·
Graduate Definition of bi-local measurement by Masanes et al.
- Sonderval
- · Replies 2 ·
Graduate Oscillator Model with Eigenfunctions
- Vajhe
- · Replies 2 ·
Graduate Structure of Matter in Quantum Field Theory
- DarMM
- · Replies 75 ·
High School Quantum entanglement comunication
- Paulo Jardim
- · Replies 9 ·
Undergrad What is the basic scheme of quantum field theories?
- jonjacson
- · Replies 87 ·
Undergrad How Does Schwartz Derive the Schrödinger Equation from QFT?
- dm4b
- · Replies 2 ·
High School Bell state measurement outcomes in different bases
- Joao
- · Replies 2 ·
Undergrad Residual noise levels in entanglement experiments after coincidence counting
- Isa
- · Replies 3 ·
Undergrad In NMR, why does the longitudinal magnetization decrease when spins become phase coherent?
- OmerKocak
- · Replies 1 ·
Graduate How to numerically diagonalize a Hamiltonian in a subspace?
- Luqman Saleem
- · Replies 4 ·
Undergrad How does g-factor relate to energy splitting in the Lamb shift?
- Riverplatense
- · Replies 1 ·
High School How are outer products quantum states?
- Rodia
- · Replies 3 ·
Graduate Quantum interpretations reduced to absurd, in a nutshell
- Demystifier
- · Replies 6 ·
Graduate What is best way to start learning DMRG for Fermions?
- Luqman Saleem
- · Replies 2 ·
High School Quantum entanglement phenomenon
- federete
- · Replies 2 ·
Undergrad What is the relation between chemical potential and the number of particles?
- Luqman Saleem
- · Replies 3 ·
Graduate Does the Bell theorem assume reality?
- Demystifier
- · Replies 220 ·
High School Doesn't the choice of measurement prove free will
- entropy2information
- · Replies 65 ·
Graduate Is QM Foundations Facing a Crisis?
- Auto-Didact
- · Replies 31 ·
High School Applying gates to individual qubits after entanglement
- Joao
- · Replies 6 ·
Graduate How to choose the number of particles per site in Fermionic DMRG?
- Luqman Saleem
- · Replies 1 ·
Graduate Perturbation solution and the Dirac equation
- Neutrinos02
- · Replies 1 ·
Undergrad Stationary states vs. the unitary time evolution operator
- LarryS
- · Replies 3 ·
Undergrad Electrons and the Pauli exclusion principle
- Philipsmett
- · Replies 22 ·
Graduate Derive / verify Legendre P (cos x)
- Sparky_
- · Replies 2 ·
High School Whats the principle behind Schuster Focusing?
- TachyonLord
- · Replies 1 ·
High School Can someone explain to me what's the Schrodingers cat?
- DeltaForce
- · Replies 7 ·
Undergrad Electrostatic repulsion at a distance
- Philipsmett
- · Replies 6 ·
Undergrad Quantum fidelity for pure states as trace product
- Alex Dingo
- · Replies 7 ·
Undergrad Human eyes can detect single photons?
- Auto-Didact
- · Replies 19 ·
Undergrad Electrons in Quantum Field Theory: A Composite Excitation
- Philipsmett
- · Replies 9 ·
Undergrad Phase shift after double-slit for entangled photons
- boxfullofvacuumtubes
- · Replies 5 ·
Undergrad "Breaking the loop" in Casimir force?
- Swamp Thing
- · Replies 1 ·
Graduate Does Bell's theorem imply nonlocality using a false assumption
- Ali Lavasani
- · Replies 6 ·
Undergrad Assumptions made in stationary-state scattering
- WWCY
- · Replies 4 ·
High School Entanglement Decay of a proton pair
- sqljunkey
- · Replies 2 ·
Undergrad Integration of the Outer Product of a Basis
- Prometheus18
- · Replies 1 ·
Undergrad Why is the Phase Shift in Grover's Algorithm Applied to All Elements Except 0?
- Peter_Newman
- · Replies 4 ·
Graduate Uncertainty principle, removing infinity in the Fourier Transform
- ade
- · Replies 1 ·
Graduate Quantum Entangled Living Bacteria
- Auto-Didact
- · Replies 14 ·
Undergrad How does magnetism work in QM?
- S Beck
- · Replies 2 ·
High School Interference fringes, what if you sample them?
- David Byrden
- · Replies 53 ·
Undergrad C-G coefficients and Angular momentum
- QuarkDecay
- · Replies 2 ·
Undergrad How does an electron interact in QFT?
- Philipsmett
- · Replies 6 ·
Undergrad Inner product of a vector with an operator
- EquationOfMotion
- · Replies 6 ·
High School Is Uncertainty in Quantum Mechanics a Fundamental Limit or a Measurement Issue?
- Kevin Chieppo
- · Replies 9 ·
High School Are Quantum Entities in Macro Sized Objects Entangled?
- Robert Friz
- · Replies 22 ·
Undergrad Qualitative description of particles in QFT
- Geofleur
- · Replies 15 ·
Undergrad Calculate Revival Time of a Wave in Griffiths' QM 2nd Ed.
- Abhishek11235
- · Replies 1 ·
Undergrad Complex conjugate of an inner product
- Pablo315
- · Replies 2 ·
Undergrad Why particles have group velocity?
- arda
- · Replies 7 ·
Undergrad Electron Repulsion in QFT: How Does It Work in Quantum Field Theory?
- Philipsmett
- · Replies 5 ·
High School Understanding Entangled Electrons: Creation, Isolation, and Observation
- RJ Emery
- · Replies 8 ·
Undergrad How does stimulated emission work in the process of light amplification?
- Albarok
- · Replies 6 ·
Undergrad Integration being unchanged after rotation
- AndrewGRQTF
- · Replies 2 ·
Undergrad Do I need energy to measure position without uncertainty?
- gmastrogiovanni
- · Replies 5 ·
Undergrad Visualizing the Attached EM Field for Free Electron in QFT
- CSnowden
- · Replies 19 ·
Undergrad Novel Schrodinger equation examples for 1D
- learn.steadfast
- · Replies 5 ·
Undergrad Casimir force and the Vacuum Field
- Swamp Thing
- · Replies 13 ·
Undergrad Double slit with a quarter wave polarizer on one slit
- Marco Masi
- · Replies 3 ·
High School NOVA Show on Einstein and Quantum Entanglement
- jedishrfu
- · Replies 9 ·
Graduate Dipole moment of an isolated quantum system
- Sheldon Cooper
- · Replies 2 ·
Undergrad One-Dimensional System: Boundary Condition Applicability
- GANTI_RAVITEJA
- · Replies 1 ·
Insights How I Stopped Worrying and Learned to Love Orthodox Quantum Mechanics - Comments
- Demystifier
- · Replies 287 ·
Graduate Wave functions for positrons and electrons
- friend
- · Replies 5 ·
Undergrad Franck-Hertz: Overall behaviour of the current
- greypilgrim
- · Replies 1 ·
Undergrad Why does a mercury Franck-Hertz tube produce visible light?
- greypilgrim
- · Replies 3 ·
High School Superposition of traps (thought experiment)
- PaleMoon
- · Replies 4 ·
Undergrad Annihilation vs. Creation Operators: What's the Difference?
- gerald V
- · Replies 3 ·
Undergrad Quantum Oscillator in 1D: How Can a Real Particle Have an Imaginary Velocity?
- RealKiller69
- · Replies 3 ·
High School Are all particles and photons entangled?
- jjfromspace
- · Replies 1 ·
Graduate The effect of macroscopic quantum phenomena on human evolution
- alphajoza
- · Replies 1 ·
Graduate The different interference patterns in the double-slit experiment
- fluidistic
- · Replies 1 ·
Undergrad The component of the total spin in the direction of H
- Another
- · Replies 1 ·
Undergrad How has quantum physics been used in biology and medicine?
- nnope
- · Replies 8 ·
Undergrad Why is u(a,b) equal to Cab divided by sqrt(2m)?
- filip97
- · Replies 4 ·
Undergrad Info traveling faster than light, and quantum entanglement
- bobtom
- · Replies 7 ·
Undergrad Diffraction experiments with one particle at a time?
- Sandeep T S
- · Replies 8 ·
Undergrad Quantum locality and nonlocality at Planck scales
- awcrowe
- · Replies 12 ·
High School The Spectral Gap and Quantum Vacuum Fluctuations
- Cerenkov
- · Replies 2 ·