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 Use of Gell-Mann matrices as the SU(3) basis for gluon states?
- James1238765
- · Replies 8 ·
Undergrad Axion Interaction: Weak & Strong Nuclear Forces
- Ranku
- · Replies 5 ·
Undergrad Query on use of prism in delayed choice quantum eraser experiment
- Steve4Physics
- · Replies 4 ·
Undergrad Is the superposition of mesons (such as pion) a new particle?
- James1238765
- · Replies 9 ·
Undergrad How Is the Matrix V Related to Dirac Spinors and Tensor Products?
- James1238765
- · Replies 12 ·
High School Quantum field theory and wave particle duality
- LifelongLearner125
- · Replies 2 ·
Undergrad Single Photon States: Definition & Real-Life Applications
- LittleSchwinger
- · Replies 32 ·
Undergrad Evaluating the quark neutrino mixing matrix
- James1238765
- · Replies 3 ·
Graduate About the rigged Hilbert space in QM
- pabloweigandt
- · Replies 26 ·
Undergrad Is a Photon Considered a Real Object?
- fxdung
- · Replies 2 ·
Graduate How are quantum optical experiments designed? ;)
- yucheng
- · Replies 1 ·
High School Collapse and unitary evolution
- PaleMoon
- · Replies 149 ·
High School What about if I apply HUP to myself?
- dyn
- · Replies 10 ·
Undergrad Partial trace and the reduced density matrix
- yucheng
- · Replies 4 ·
Undergrad What is the probability of an electron emitting a photon?
- James1238765
- · Replies 14 ·
High School Can we all agree "consciousness" is not required to collapse wave function?
- HomesliceMMA
- · Replies 20 ·
Undergrad Direction of motion of particles with total spin under magnetic field
- sal1854
- · Replies 1 ·
High School How to evaluate whether a photon's polarization is in superposition?
- fluidfcs
- · Replies 2 ·
Undergrad Three Plus Anti-symmetric Particles
- JohnH
- · Replies 3 ·
High School Can an electron remain in an exited state forever with constant energy input?
- medammari
- · Replies 6 ·
High School What happens when ethane absorbs UV light?
- Lotto
- · Replies 4 ·
Undergrad Shankar on constraints and free parameters for a particle in a box
- kmm
- · Replies 4 ·
High School Why does anyone think gravity might collapse wave function?
- HomesliceMMA
- · Replies 59 ·
Undergrad Spinors and eigenspinors confusion
- happyparticle
- · Replies 3 ·
Graduate Adiabatic theorem for a 3 level system
- Malamala
- · Replies 1 ·
High School Does the bomb experiment do a measurement?
- Rene Dekker
- · Replies 7 ·
Undergrad How Do Quantum Numbers Influence Energy Levels in Atomic Systems?
- PreposterousUniverse
- · Replies 15 ·
Undergrad Annoying detail in derivation of Compton scattering
- crossword.bob
- · Replies 1 ·
Undergrad Double-Slit Experiment: Does rate of photon emission matter?
- Mr Fallspring
- · Replies 16 ·
Undergrad Young's slit experiment with single photons
- Marilyn67
- · Replies 81 ·
Undergrad Are Planck's black body oscillators QHOs?
- snoopies622
- · Replies 25 ·
High School Is there a resource that discusses wave collapse experiments?
- HomesliceMMA
- · Replies 2 ·
Graduate Gauge theory on a lattice: intertwiners, gauge potentials...
- Heidi
- · Replies 1 ·
High School The wave solution to the Photoelectric effect
- in2infinity
- · Replies 21 ·
Graduate Proving Subadditivity of Entropy for Uncorrelated Systems in Pure States
- ergospherical
- · Replies 2 ·
Undergrad What does decoherence have to do with phases?
- Talisman
- · Replies 71 ·
Undergrad Spectral Decomposition of the State Space
- Lynch101
- · Replies 18 ·
Graduate Induced dipole moment (adiabatic) following the rotating E-field
- BillKet
- · Replies 4 ·
Undergrad Double Slit Experiment Mathematics
- James Brady
- · Replies 3 ·
Graduate Question about factoring the Klein-Gordon equation
- BiGyElLoWhAt
- · Replies 6 ·
Undergrad Few Questions about: TU delft "A loophole-free Bell test"
- grzegorzsz830402
- · Replies 17 ·
Graduate Mathematical representation of two-entangled q-bits?
- Emrissa
- · Replies 22 ·
High School Non-parallel double slit experiment
- Devin-M
- · Replies 4 ·
Undergrad Quantum fluctuations & 'virtual particles'
- JuneSpring25
- · Replies 10 ·
High School Photon-Electron-Quanta: Explained Simply
- sinus
- · Replies 1 ·
Graduate The Effect of Time-Varying Electric Fields on a 2-Level Ion System
- Malamala
- · Replies 5 ·
Graduate Normalization of Morse potential wavefunctions
- Malamala
- · Replies 5 ·
Undergrad How Is the Planck Relation E=hf Derived?
- PreposterousUniverse
- · Replies 2 ·
Undergrad Infrared Divergences in Vertex and Self Energy diagrams
- Elmo
- · Replies 18 ·
Undergrad MP2 vs. HF Method Explanation for Beginners
- physicisttobe
- · Replies 8 ·
High School How Can We Resolve Noise from Low Frequency Quanta in Electromagnetic Waves?
- snorkack
- · Replies 10 ·
Undergrad Inner products and wavefunctions
- dyn
- · Replies 9 ·
Undergrad Explicit non-local form for the vector potential?
- Amentia
- · Replies 4 ·
Graduate Cause of spontaneous emission?
- sol47739
- · Replies 15 ·
Undergrad Discover Beginner-Friendly Books on Quantum Information and Computation | Q&A
- Llukis
- · Replies 8 ·
Undergrad Why Does Quantum Entanglement Seem Puzzling Compared to Everyday Correlations?
- leonid.ge
- · Replies 3 ·
High School Is there any practical proof that quantum entanglement really works?
- sadaronjiggasha
- · Replies 32 ·
High School Quantum mechanical one-liners?
- sadaronjiggasha
- · Replies 10 ·
High School I have question regarding quantum physics (localizing an electron)
- sadaronjiggasha
- · Replies 6 ·
High School How do particles get their spin?
- BadgerBadger92
- · Replies 48 ·
High School Idle Photons (motionless relative to the Earth's surface?)
- James William Hall
- · Replies 5 ·
Undergrad Understanding Light Polarization: An Intuitive Explanation
- Spathi
- · Replies 8 ·
Undergrad Lifetime and Linewidth: Solving the 2π Factor
- Malamala
- · Replies 7 ·
High School Why can gravity escape from a black hole?
- askmathquestions
- · Replies 8 ·
High School So this is a bit of a duplicate: Is the universe fully transparent to gravitons?
- .Scott
- · Replies 38 ·
Graduate Spin networks with different intertwiners
- Heidi
- · Replies 1 ·
Undergrad Al26 Meta Stable State: Forbidden Xray Transition?
- x_engineer
- · Replies 8 ·
Undergrad Understanding Entanglement and Born's Rule in Photon Polarization Experiments
- mbond
- · Replies 13 ·
High School What are Feynman Diagrams and how do they help explain Quantum Electrodynamics?
- DeltaForce
- · Replies 49 ·
Undergrad Feynman diagrams and sum over paths
- Husserliana97
- · Replies 5 ·
Undergrad Is elastic scattering of electrons by a solid possible?
- Philip Koeck
- · Replies 11 ·
Undergrad How Can Laser Light Mixing Reveal Quantum Entanglement?
- James2018
- · Replies 16 ·
Undergrad Error of the WKB approximation
- phyQu
- · Replies 5 ·
Undergrad What causes qubit superpositions to form?
- oknow
- · Replies 9 ·
High School Why doesn't the detector affect the result?
- Mervinoc
- · Replies 9 ·
Undergrad The pattern of one photon at a time passing through large-distance setups?
- tade
- · Replies 32 ·
Undergrad Double-slit experiment, determining which slit an electron passed thru
- tade
- · Replies 26 ·
Graduate Changing Hamiltonian with some eigenvalues constant
- hilbert2
- · Replies 5 ·
Undergrad How is an interference pattern changed by an external field?
- tade
- · Replies 11 ·
Graduate The Probability Distribution of a Bosonic Field when Emitted
- JohnH
- · Replies 26 ·
Undergrad Other ways of finding expectation value of momentum
- VVS2000
- · Replies 8 ·
Undergrad Looking For Explanation of New Interferometer Article
- Hornbein
- · Replies 1 ·
Undergrad Is the magnetic moment of a hydrogen atom not equal to Bohr's magneton?
- computer
- · Replies 22 ·
Undergrad Question on bra vs ket notation
- Ahmed1029
- · Replies 6 ·
High School Tachyons and imaginary numbers?
- BadgerBadger92
- · Replies 15 ·
High School Tensor product of operators and ladder operators
- Heidi
- · Replies 2 ·
Undergrad Why are Planck units considered fundamental?
- Conn_coord
- · Replies 23 ·
Undergrad Double-slit experiment with momentum entangled pair of photons
- Christian Thom
- · Replies 7 ·
Undergrad Speed of individual photons in a vacuum?
- LarryS
- · Replies 71 ·
Undergrad Measurement accuracy or variation
- Conn_coord
- · Replies 1 ·
Undergrad How does a process of a Raman transition break quantum entanglement?
- tade
- · Replies 6 ·
Undergrad What is this notation D|(n;n')|, and how to solve it?
- K-Manu
- · Replies 3 ·
Undergrad Spin expectation value for one particle vs actual measurement
- Ahmed1029
- · Replies 4 ·
High School How is energy transferred from a wave to a photon?
- curiouschris
- · Replies 18 ·
Undergrad About photon-polariser interaction quantum-molecular-level mechanics
- tade
- · Replies 2 ·
Undergrad Curious about an idea of a modified polariser to send signals with QE
- tade
- · Replies 99 ·
Undergrad Weinberg Lectures in QM (2013 Ed.), Equation 7.10.15
- jouvelot
- · Replies 8 ·
Undergrad Quantum mechanics stationary state
- happyparticle
- · Replies 2 ·
Undergrad Negative energy when a laser goes through lithium niobate crystal?
- gggnano
- · Replies 13 ·
Undergrad Density Operators of Pure States
- Dario56
- · Replies 21 ·