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 What test for determing particle spin?
- Chris Frisella
- · Replies 13 ·
High School Regarding Young's two slit experiment
- mshawkeyems
- · Replies 3 ·
High School New retrocausality experiment ?
- Nicky665
- · Replies 1 ·
Undergrad A question on Bose enhancement & Pauli blocking
- "Don't panic!"
- · Replies 3 ·
Undergrad T-symmetry and conservation of energy
- entropy1
- · Replies 2 ·
High School Energy released in electron transition
- Nitheesh
- · Replies 6 ·
Undergrad Question about commuting operators
- Frank Einstein
- · Replies 2 ·
Undergrad Sinusoidal Potential in Schroedinger
- Sturk200
- · Replies 1 ·
High School Why doesn't light destroy matter
- TCar
- · Replies 5 ·
Undergrad Classical/QM justification of principle of least action
- greypilgrim
- · Replies 6 ·
Undergrad How do I find this state |j,m=j> to calculate another state?
- valanna
- · Replies 2 ·
Graduate What is the Interpretation of Running Coupling in MS Scheme?
- Luca_Mantani
- · Replies 5 ·
Graduate Identical Fermions in identical linear combinations
- hokhani
- · Replies 3 ·
High School Conservation of energy in quantum physics
- IAmJustCurious
- · Replies 5 ·
Graduate What is a Mass Independent Renormalization Scheme?
- Luca_Mantani
- · Replies 6 ·
Undergrad Confusion about initial states and coherent states
- valanna
- · Replies 5 ·
High School Examples of quantum randomness?
- houlahound
- · Replies 14 ·
Graduate Can Protons Interact with Double Slit Construction?
- julmfyysik
- · Replies 6 ·
Graduate A question about the mode expansion of a free scalar field
- "Don't panic!"
- · Replies 2 ·
High School Are Pointer States Primitives in Quantum Mechanics?
- bluecap
- · Replies 3 ·
High School Quanta: What is it & How Does It Relate to Energy?
- shaylempert
- · Replies 28 ·
High School Electrons: Orbits, Collisions, & What Happens When They Collide
- shina
- · Replies 8 ·
Undergrad What Are Kets and Vectors in 3-D Representation?
- dyn
- · Replies 5 ·
Undergrad Radioactive decay, macroscopic objects
- durant35
- · Replies 1 ·
Graduate Canonical quantisation of the EM field
- Mr-R
- · Replies 2 ·
Undergrad Fourier transform of Coulomb potential
- IanBerkman
- · Replies 3 ·
Undergrad Visualizations of a hydrogen atom in an external electric field
- The Bill
- · Replies 11 ·
Undergrad Simple calc. of energy levels in quantum harmonic oscillator
- exponent137
- · Replies 8 ·
Undergrad What happens to super-symmetry at the center of a black hole?
- cheme2019
- · Replies 1 ·
High School Is it possible to create macroscopic Casimir effect?
- Bawelna
- · Replies 6 ·
Undergrad How to change the Hamiltonian in a change of basis
- IanBerkman
- · Replies 16 ·
Undergrad Will quantum computers be able to factor larger numbers in the future?
- Fooality
- · Replies 7 ·
High School Can the Bohmian Wave Function Influence Thermodynamic Trajectories?
- bluecap
- · Replies 3 ·
Undergrad Is the Triplet State Entanglement the same as Singlet State Entanglement?
- looseleaf
- · Replies 7 ·
Undergrad Box normalization for the free particle-Position operator
- Joker93
- · Replies 10 ·
Undergrad Elitzur-Dolev Quantum Liar Paradox
- Quantum of Solace
- · Replies 3 ·
High School Is General Relativity Merely a Classical Framework for Calculations?
- bluecap
- · Replies 41 ·
Graduate Why does expectation values are always nonnegative?
- zhdx
- · Replies 23 ·
Undergrad What turns energy into matter and vice versa?
- physics user1
- · Replies 21 ·
Undergrad Understanding Schrodinger's cat
- kent davidge
- · Replies 3 ·
Undergrad A quantum system under constant observation
- nashed
- · Replies 4 ·
Graduate Particle in a box in momentum basis
- Ravi Mohan
- · Replies 37 ·
High School The position of a particle/electron question
- science_rules
- · Replies 9 ·
High School What would happen if a wave function disruptor was used on a table?
- bluecap
- · Replies 1 ·
Undergrad The speed of a "photon" in a multipath experiment?
- alikim
- · Replies 12 ·
Undergrad Quantum decoherence superposition of macroscopic object
- Quantum of Solace
- · Replies 1 ·
High School Does Rejecting Realism in Quantum Mechanics Ensure Consistent Predictions?
- Education246
- · Replies 10 ·
High School Is wave / particle duality linked to superposition?
- rede96
- · Replies 11 ·
Graduate Effect of visible light on conductivity
- EngPhy
- · Replies 2 ·
Undergrad Understanding the Delayed Choice Quantum Eraser Experiment
- Cobalt101
- · Replies 1 ·
Graduate Approximating a QF with finite-dimensional Hilbert space
- hilbert2
- · Replies 20 ·
Undergrad Still confused about (anti)symmetrization of wavefunctions
- HAYAO
- · Replies 4 ·
Undergrad What is the energy due to Spin?
- jonjacson
- · Replies 15 ·
Undergrad Delayed choice two slit experiment - photon
- Cobalt101
- · Replies 1 ·
Undergrad Finding components in momentum representation
- IanBerkman
- · Replies 5 ·
Undergrad Two Identical non-entangled Particle System
- TimeRip496
- · Replies 3 ·
Undergrad 'speed' of spooky action vs delayed choice
- Quantum of Solace
- · Replies 17 ·
High School Bell's state measurement in the Bell basis
- limarodessa
- · Replies 3 ·
Undergrad Can the Planck equation be derived by considering phonons?
- Austin Daniel
- · Replies 1 ·
Undergrad Double slit experiment question
- alikim
- · Replies 1 ·
Undergrad Delayed choice - Bohr's experiment with a Camera
- pBrane
- · Replies 9 ·
Undergrad Is space infinitesimal? Can it be divided unlimited times?
- Tanelorn
- · Replies 10 ·
Graduate Atomic Orbitals and Symmetry
- hokhani
- · Replies 7 ·
Undergrad Question about double slit experiment results
- ElMachoTaco
- · Replies 16 ·
Undergrad Help to understand the wave function for atom (gas)
- KFC
- · Replies 5 ·
High School A question about Electron spin
- rede96
- · Replies 6 ·
Undergrad Uncertainty Principle.... Intent Behind It?
- Madi Araly
- · Replies 71 ·
High School Dirac Equation vs. Schrodinger Equation
- DiracPool
- · Replies 16 ·
High School Still confused about superposition and mixed states
- HAYAO
- · Replies 18 ·
Graduate Is entanglement based on first principles?
- nortonian
- · Replies 34 ·
Undergrad No problem at all, happy to help! Have a great weekend as well.
- Frost_Xue
- · Replies 2 ·
High School Quantum Mechanics: Origin of the Term & Why Mechanics?
- Quotidian
- · Replies 4 ·
High School Is the Higgs Field Uniform Across Space-Time or Does It Vary?
- hsdrop
- · Replies 9 ·
Undergrad How are different potentials implemented experimentally?
- pcflores
- · Replies 2 ·
Graduate Srednicki's QFT: Feynman Rules and Feynman Diagrams
- Junaid456
- · Replies 4 ·
Undergrad Double Slit Experiment: Magnification?
- Simon Peach
- · Replies 2 ·
Graduate Is this experiment real (double slit)?
- alikim
- · Replies 3 ·
High School The Firewall Paradox: Is it Possible?
- steveJOBS
- · Replies 1 ·
Undergrad How can larger dips in absorption line give more element
- Phys12
- · Replies 1 ·
High School Quantum Entanglement. Is spin conserved?
- Clever Penguin
- · Replies 2 ·
Undergrad Why is association rule in angular momentum sum not valid?
- goodphy
- · Replies 3 ·
Undergrad Interpret Heisenberg Picture: Operators & States
- quickAndLucky
- · Replies 3 ·
Graduate Why the particle velocity in Dirac theory is equal to c?
- Arbab
- · Replies 5 ·
High School Meaning of the word 'instantaneous'
- Deepak K Kapur
- · Replies 113 ·
Undergrad Feynman Lectures: negative alpha for solving Schrödinger equation
- forcefield
- · Replies 15 ·
Undergrad High Energy Photon Recieved as Lesser Energy Photons?
- Chris Frisella
- · Replies 3 ·
Graduate Wavefunction matching two different H, not just V
- SturgySturges
- · Replies 3 ·
Undergrad Delayed choice, pseudo-retrocausality, massive particles
- Quantum of Solace
- · Replies 23 ·
Undergrad Particle number conservation and motivations for QFT
- Frank Castle
- · Replies 22 ·
Undergrad Zeeman effect sign of circular polarization
- Khashishi
- · Replies 3 ·
Graduate What is the physical significance of the unitary matrix in this optical device?
- naima
- · Replies 12 ·
Undergrad Why are total orbital QN l,m zero for closed subshell?
- goodphy
- · Replies 10 ·
High School Is the wave function physical ?
- DoobleD
- · Replies 26 ·
High School Accuracy in speed of photon - uncertainty?
- chester20080
- · Replies 14 ·
Undergrad Evalutaion of Schrodinger's equation
- student354
- · Replies 1 ·
Undergrad Comments on updated delayed choice erasure graphic
- Strilanc
- · Replies 1 ·
High School Why is momentum the fourier transform of the wavefunction ?
- DoobleD
- · Replies 6 ·
Undergrad Doubts on wavefunction conditions
- Soren4
- · Replies 4 ·
High School What is the origin of Observables?
- entropy1
- · Replies 31 ·
High School An application of the uncertainty principle
- Youyang Zhao
- · Replies 2 ·