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
High School How does string theory fit with QFT?
- member 623540
- · Replies 2 ·
Undergrad Why not describing the radiatation of atom spectrum by TDSE
- zhouhao
- · Replies 7 ·
Graduate Key problems in classical and quantum measurement
- A. Neumaier
- · Replies 30 ·
Graduate A question about linear response and conductivity
- lichen1983312
- · Replies 11 ·
Undergrad Could Wormholes and Entanglement Be Connected?
- Quantum of Solace
- · Replies 2 ·
Graduate Classical intr. ang mom and quantum intr ang mom relation
- fisher garry
- · Replies 1 ·
Graduate Challenges to QED from hyperfine measurements
- tom.stoer
- · Replies 9 ·
Undergrad Partially entangled(W), Maximally and disentangled states
- Noora Alameri
- · Replies 1 ·
Undergrad Effect of Homog./Non-Homog. Magnetic Field in Heisenberg Spin System
- Noora Alameri
- · Replies 1 ·
Undergrad Bose-Einstein condensates coherence
- Bone Rasta
- · Replies 1 ·
Undergrad What Mathematical Theories Are Essential for Understanding Quantum Physics?
- Michel Raskin
- · Replies 4 ·
High School How decoherence destroys superpositions
- jaydnul
- · Replies 31 ·
Undergrad Does quantum mechanics refute materialism?
- SeoKyu
- · Replies 2 ·
Undergrad Do Bell experiments disprove local realism?
- SeoKyu
- · Replies 2 ·
Undergrad Transition state of electrons in molecules
- goldenboy
- · Replies 8 ·
Undergrad Factorising expectation values
- dyn
- · Replies 4 ·
Undergrad Smallest possible orbit and velocity of a particle?
- jamie.j1989
- · Replies 2 ·
Undergrad Build Your Own Quantum Entanglement Experiment?
- Steven Ellet
- · Replies 27 ·
Undergrad Why probability current = 0 at infinity? Why must wavefunction be continuous?
- Happiness
- · Replies 4 ·
Undergrad What's the significance of the phase in a coherent state?
- vancouver_water
- · Replies 5 ·
Undergrad Differences in photons from protons vs photons from e-?
- Idunno
- · Replies 6 ·
Undergrad Is the Phase Velocity of a Massive Particle Representing Anything Physical?
- LarryS
- · Replies 11 ·
Undergrad Is Bell's Theorem Valid Despite Fundamental Theoretical Loopholes?
- facenian
- · Replies 39 ·
Undergrad Is the Fermion number operator squared equal to itself?
- voila
- · Replies 9 ·
Graduate Haag's Theorem & Wightman Axioms: Solving Problems in QFT?
- ftr
- · Replies 61 ·
High School Quantum tunneling - Questions about some pop-science claims
- Jeronimus
- · Replies 11 ·
High School When do we know where an object is
- Daniel Huren
- · Replies 6 ·
High School Bell Non Locality, Quantum Non Locality, Weak Locality, CDP
- Point Conception
- · Replies 80 ·
High School Question about a beam of light
- Mosio
- · Replies 3 ·
High School How can something be "Zero Dimensional?"
- MSparks6
- · Replies 7 ·
Undergrad Inequality for the time evolution of an overlap
- Dyatlov
- · Replies 1 ·
Undergrad Neutron Stars: Flipping Up Quarks to Down Quarks
- WildBill
- · Replies 2 ·
Undergrad Particle antiparticle creation
- Michel Raskin
- · Replies 4 ·
Undergrad A particle measured in a too high potential
- DarkBabylon
- · Replies 1 ·
Undergrad Quantum "tunneling" of sorts and QFT....
- asimov42
- · Replies 16 ·
High School Double Slit Experiment: Detection around slit?
- Andy_K
- · Replies 4 ·
Undergrad How to compute second-order variation of an action?
- Frank Castle
- · Replies 6 ·
Undergrad Electron jelly model and Hydrogen Atom
- jonjacson
- · Replies 7 ·
Undergrad The Fundamental Nature of Angular Momentum in Quantum Mechanics
- Jezza
- · Replies 3 ·
High School Electron Color & Wavelengths: Why Dependency?
- GAURAV DADWAL
- · Replies 2 ·
Graduate Wigner-Eckart theorem and reduced matrix element
- Tilde90
- · Replies 3 ·
Undergrad Identical Particle States in a Unidimensional Box
- JamesHG
- · Replies 2 ·
Undergrad Heat energy: statistical mechanics vs atomic orbitals
- Zebulin
- · Replies 4 ·
Graduate Help with proof of eq. 2.64 of Intro. to Quantum Mechanics
- SherLOCKed
- · Replies 3 ·
Graduate Can Zeta ζ(½+it) be interpreted as a Wave function?
- Jason C
- · Replies 2 ·
Graduate Operators in Quantum Mechanics
- Sheldon Cooper
- · Replies 7 ·
Undergrad Life on the Edge: is it still alive?
- sophiecentaur
- · Replies 31 ·
Undergrad Electron capture and electron transitions.
- oksuz_
- · Replies 1 ·
Undergrad Arithmetic Block in Shor Algorithm
- Ricardo Belchior
- · Replies 5 ·
Graduate Operation of Hamiltonian roots on wave functions
- SherLOCKed
- · Replies 1 ·
Undergrad Adding types of angular momenta
- Jezza
- · Replies 18 ·
Undergrad Compton effect: how can it take place?
- RS6
- · Replies 52 ·
Undergrad Laser vs photodiodes and spectra
- Frank-95
- · Replies 7 ·
High School Why does waveform exp[iwt] have negative kinetic energy?
- Happiness
- · Replies 3 ·
Undergrad Change in electron energy level and photon emission....
- asimov42
- · Replies 7 ·
Undergrad Pauli spin matrices and Eigen spinors
- Rahulrj
- · Replies 1 ·
Undergrad Bell's theorem and Superdeterminism
- ueit
- · Replies 16 ·
Undergrad General Questions Related to Quantum Measurement
- Efuhvex
- · Replies 5 ·
Undergrad What Came First the Magnet or the Field?
- Dadface
- · Replies 43 ·
Undergrad Angular momentum operator commutation relation
- Bernard
- · Replies 5 ·
High School Is Inversion Symmetry Found in Nature or Technology?
- lcr2139
- · Replies 1 ·
Undergrad Orbital angular momentum of light
- Spinnor
- · Replies 11 ·
Undergrad Time independent Schrodinger equation results (1D)
- WrongMan
- · Replies 3 ·
Undergrad Renormalisation and the Landau pole
- Dadface
- · Replies 20 ·
Undergrad Why does SU(2) have 3 parameters/generators like the SO(3)?
- TimeRip496
- · Replies 1 ·
Undergrad Do the vacuum states created by soft photons have vacuum flu
- Suekdccia
- · Replies 3 ·
Undergrad Wave-particle duality general question
- LarryS
- · Replies 1 ·
Undergrad Time Reversal Operator: Physics Explained
- Silviu
- · Replies 1 ·
Undergrad What is the connection between classical uncertainty and quantum mechanics?
- CookieSalesman
- · Replies 3 ·
Graduate Vacuum polarization at intermediate distances
- ftr
- · Replies 2 ·
Undergrad Single-mode field quantization Hamiltonian
- ja!
- · Replies 2 ·
Undergrad Maximally entangled state expression and generalization
- Noora Alameri
- · Replies 9 ·
Undergrad Why do I get to a contradiction?
- Gjmdp
- · Replies 4 ·
High School How to change electron and proton charge
- Quantum Velocity
- · Replies 8 ·
Undergrad Conceptual question about spin state rotations
- mindarson
- · Replies 5 ·
Graduate Can a Point-Like Particle Defy the Uncertainty Principle?
- mikeyork
- · Replies 24 ·
Graduate Physics Challenge by QuantumQuest #1
- Greg Bernhardt
- · Replies 25 ·
Undergrad Information Theory and Entropy
- Arman777
- · Replies 10 ·
Graduate Peskin/Schroeder 4.77 page (about cross-sections)
- Manu_
- · Replies 2 ·
Graduate Non-Heisenberg Uncertainty Relations
- Larry
- · Replies 15 ·
Graduate Double slit experiment wave interference?
- Mario Rossi
- · Replies 24 ·
High School Double slit and randomly functioning measuring devices
- phillovix
- · Replies 13 ·
High School Energy of Gamma Ray Photon with Wavelength h
- Daniel Petka
- · Replies 9 ·
Undergrad Klein-Gordon Operator: Creating Particles at Position x
- Silviu
- · Replies 3 ·
High School Trying to understand the double-slit experiment
- Bruce Barron
- · Replies 12 ·
High School Probability Amplitude: Understanding Photons
- Daniel Petka
- · Replies 13 ·
Undergrad How does observation affect reality
- Trollfaz
- · Replies 64 ·
High School What is Decoherence and How Did Bohr and Einstein Debate Its Implications?
- Navid Eghbali9
- · Replies 2 ·
High School Wave Function Collapsing Function
- sqljunkey
- · Replies 5 ·
High School Do wave packets really represent a free particle?
- LarryS
- · Replies 16 ·
High School Is 'Synchronized' a Misleading Term for Entangled Atoms?
- Chris Miller
- · Replies 4 ·
Undergrad Quantum Entanglement on the Moon
- John Hurly
- · Replies 1 ·
Undergrad Propagator operator in Heinsenberg picture
- Silviu
- · Replies 5 ·
Graduate TQFT From Purely Mathematical Considerations
- nateHI
- · Replies 1 ·
High School Are vertical lines from squinting a Quantum phenomenon?
- wildsheep
- · Replies 1 ·
High School Brownian motion from virtual photons?
- SlowThinker
- · Replies 11 ·
High School Do particles "care" about consciousness or simply the data
- Jacob Gable
- · Replies 1 ·
Undergrad How to understand the derivation for this process in QFT?
- leo.
- · Replies 1 ·
Undergrad What is Cn in quantum mechanics?
- Tooba Sohail
- · Replies 8 ·
Undergrad Causality preserved in Klein-Gordon equation
- Silviu
- · Replies 3 ·