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
Graduate Two equivalent statements of time reversal symmetric Hamiltonian
- hokhani
- · Replies 13 ·
Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect
- Greg Bernhardt
- · Replies 22 ·
Undergrad Hooke's law: Constructing a force operator for electron orbitals?
- Vectronix
- · Replies 1 ·
Undergrad What forces a magnet's field to track the rotation of the magnet?
- Swamp Thing
- · Replies 1 ·
Undergrad Klein-Gordon equation in the nonrelativistic limit
- George Keeling
- · Replies 3 ·
Undergrad Antilinear Operators
- hokhani
- · Replies 11 ·
Undergrad Entanglement swapping in the context of Indivisible Stochastic Process
- JonAce73
- · Replies 2 ·
Graduate Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement?
- Quantum_Kevin
- · Replies 4 ·
Undergrad HUP in condensates?
- LarryS
- · Replies 1 ·
Graduate Problem while simulating spin polarized interacting SSH model
- Dhiman9163
- · Replies 1 ·
High School Is it correct to state that all measurements count photons?
- Chiara
- · Replies 11 ·
High School Where does the extra mass reside in an excited atom?
- Swamp Thing
- · Replies 9 ·
Undergrad Angular Momentum Vector and Its Magnitude
- hokhani
- · Replies 14 ·
Undergrad Antiproton and positron annihilation
- Sasho Andonov
- · Replies 2 ·
Undergrad Can a delayed choice apparatus prevent observation of entangled photons?
- cgsanderson
- · Replies 6 ·
Undergrad Why do non-colinear Lorentz boosts imply particles must have spin?
- LarryS
- · Replies 4 ·
Undergrad Can (ordo) Fermions convert to Bosons?
- RobbyQ
- · Replies 5 ·
Undergrad Why do different inner product notations seem inconsistent?
- nomadreid
- · Replies 6 ·
Undergrad The Power of QM and QFT
- bhobba
- · Replies 4 ·
Undergrad Importance of Hanbury Brown and Twiss experiment
- qnach
- · Replies 13 ·
Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
- bhobba
- · Replies 3 ·
Graduate Lesser Green's function
- rbphysics
- · Replies 1 ·
Undergrad What does the product part of Laughlin wave function mean?
- George Keeling
- · Replies 1 ·
Undergrad Does a qubit break interference in the double slit experiment?
- pines-demon
- · Replies 10 ·
Undergrad Schrödinger equation and classical wave equation
- M_A_
- · Replies 39 ·
High School New idea about wave-particle duality - looking for feedback/criticism
- fbas
- · Replies 1 ·
Undergrad Is Maxwell's electromagnetism an effective (field) theory?
- Husserliana97
- · Replies 3 ·
Undergrad Why can’t photons “pile up” to eject an electron?
- Kostik
- · Replies 3 ·
Undergrad The Extended Wigner's Friend Scenarios
- ChadGPT
- · Replies 42 ·
Graduate I have some naive questions about the Reeh-Schlieder theorem
- antaris
- · Replies 1 ·
Undergrad Do ensemble-based predictions truly describe real finite systems?
- syed
- · Replies 4 ·
Undergrad How strong is the justification for low probability extreme thermal fluctuations?
- syed
- · Replies 6 ·
High School Is a table levitating possible, even at a minuscule probability?
- syed
- · Replies 32 ·
Undergrad Energy*time uncertainty for particle decay
- jjson775
- · Replies 27 ·
Undergrad Commutation of operators for particle in a box
- hokhani
- · Replies 16 ·
High School A Time Crystal Visible to the Human Eye
- jedishrfu
- · Replies 5 ·
Undergrad Quantum Entanglement and Synchronization
- James Hasty
- · Replies 6 ·
Undergrad Electron energy in atoms
- hokhani
- · Replies 10 ·
Graduate What is the connection between entanglement and the no-cloning theorem?
- mister robi
- · Replies 1 ·
High School Two/three photon absorption chemical substance producing photons for electricity generation
- Cybersoya
- · Replies 0 ·
High School Quantum entanglement
- Mark Szumilewicz
- · Replies 1 ·
Undergrad Quantum behaviour of an electron around a positively charged sphere
- hokhani
- · Replies 18 ·
Undergrad Visual depiction of atomic orbitals
- hokhani
- · Replies 12 ·
Undergrad Bloch Sphere generalization for more than one qubit
- pervect
- · Replies 4 ·
Undergrad Probabalistic determination Photon Entaglement
- RobbyQ
- · Replies 6 ·
Undergrad Commutator of x and p in quantum mechanics
- rbphysics
- · Replies 4 ·
Graduate Physical properties of the vacuum in GR vs. QFT
- Iskandarani
- · Replies 15 ·
Graduate Confusion about creation/annihilation operators with interaction
- gasgas
- · Replies 1 ·
High School Schrödinger's cat question
- leonid.ge
- · Replies 6 ·
Undergrad How can quantum physics contribute to medical physics?
- juliocastro
- · Replies 1 ·
Graduate Eigenstates of the Klein Gordon Field Operator
- Jonathan Apps
- · Replies 8 ·
Undergrad Direction of time-evolution in time reversed wave functions
- hokhani
- · Replies 12 ·
Graduate Angular momentum uncertainty principle and the particle on a ring
- physical_chemist
- · Replies 5 ·
Graduate Effects of perception
- edmund cavendish
- · Replies 4 ·
Undergrad Emission probability in blackbody spectrum derivation
- Swamp Thing
- · Replies 1 ·
Undergrad Feynman's derivation of average square distance variation in Brownian motion
- l4teLearner
- · Replies 3 ·
Undergrad Phase and group velocity for the wave function
- hokhani
- · Replies 14 ·
Undergrad Validity of identical eigenfunction of commutating operators
- hokhani
- · Replies 12 ·
Undergrad Action of an Hermitian unitary operator member of SU(2)
- cianfa72
- · Replies 15 ·
Undergrad About concept of wave-particle duality
- south
- · Replies 11 ·
Undergrad Hydrogen 21 cm line time?
- jv11
- · Replies 5 ·
Undergrad I would like some assistance working with commutators
- hmparticle9
- · Replies 1 ·
Undergrad Shape of wave function (probability distribution) of a single photon
- J O Linton
- · Replies 16 ·
Undergrad Would gravitons theoretically act like photons?
- Josiah
- · Replies 18 ·
Graduate Baryon CP Violation Observed at CERN
- PeterDonis
- · Replies 7 ·
Graduate Geometry Topology and Physics: Nakahara, Chapt. 1: Weyl Ordering
- XiYi
- · Replies 1 ·
High School Energy-time uncertainty relation for a volume and macroscopic objects?
- Aidyan
- · Replies 2 ·
Graduate Why must operators map Hilbert space vectors to Hilbert space vectors?
- gaiussheh
- · Replies 59 ·
High School The wave function of the electron doesn't collapse when passing through air?
- cosmanino2050
- · Replies 9 ·
Undergrad New book on algebraic quantum physics
- A. Neumaier
- · Replies 6 ·
Undergrad Why quarter-wave plates don't distinguish H/V from D/A polarization mixtures
- Erik Ayer
- · Replies 7 ·
Undergrad Density matrix representation of a density operator
- cianfa72
- · Replies 8 ·
Undergrad How to understand quantum computers?
- Alex Notman
- · Replies 9 ·
Undergrad Bose-Einstein statistics and the Photon
- redtree
- · Replies 1 ·
Graduate Explicit construction of Galilean-invariant space
- Adgorn
- · Replies 1 ·
Undergrad Addition of angular momenta
- alebruna
- · Replies 1 ·
Undergrad Quantum decoherence vs. measurement process
- timmdeeg
- · Replies 3 ·
Undergrad Quantum eraser experiment
- J O Linton
- · Replies 3 ·
Graduate Can scattering experiment be used to determine location and momentum of an electron?
- sumitgarg1
- · Replies 2 ·
Insights Quantum Computing for Beginners
- Bob Walance
- · Replies 19 ·
Undergrad Bob and Alice with a Bell pair
- Heidi
- · Replies 3 ·
High School Gravitons vs photons: Does the size of the atom make any difference?
- Josiah
- · Replies 3 ·
Undergrad What's the deal with instantons?
- pines-demon
- · Replies 1 ·
Undergrad How to derive orbital angular momentum of spins in quantum mechanics?
- geelpheels
- · Replies 2 ·
Undergrad Deriving Bogoliubov transformations correctly
- pines-demon
- · Replies 12 ·
Undergrad Dirac's 1972 Boston talk on Projective geometry in quantum mechanics
- grzz
- · Replies 7 ·
High School Feynman QED Questions
- photonographer
- · Replies 15 ·
Graduate Scattering cross section between charged particle and magnetic moment
- dark_matter_is_neat
- · Replies 1 ·
Undergrad More information on the momentum eigenstate in the position basis
- hmparticle9
- · Replies 1 ·
Undergrad Measurement problem - will this work?
- Gary Venter
- · Replies 4 ·
Undergrad Quantum wavelength in gravitation
- south
- · Replies 6 ·
Graduate Pauli–Villars ghost fields?
- pines-demon
- · Replies 8 ·
Graduate Magnetic field produced by moving charge in operator form
- dark_matter_is_neat
- · Replies 14 ·
Undergrad Tensor products and simultaneous eigenstates
- LightPhoton
- · Replies 1 ·
Undergrad Molecular Quantum Computer Progress
- Hornbein
- · Replies 1 ·
Undergrad Coherence time for repeated spin measurements
- aa2ll2
- · Replies 9 ·
Graduate John Bell 1964 toy model for spin
- jf117
- · Replies 3 ·
High School Can arbitrarily slow motion exist below measurable limits?
- CelestialAeon
- · Replies 20 ·
Undergrad Black Hole Fermion Count
- .Scott
- · Replies 1 ·
Undergrad Free Schroedinger equation: time separation
- chartery
- · Replies 3 ·