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 Figuring out the frequency of light using a solar cell
- hover
- · Replies 1 ·
Graduate Energy-time and momentum-position in the energy-momentum 4-vector
- LarryS
- · Replies 7 ·
Graduate What part of the Dirac field is anticommutating?
- RedX
- · Replies 3 ·
Graduate Discrete energy level of schrodinger's equation
- feynmann
- · Replies 8 ·
Graduate The question of the CPT(coherent population trapping)
- zhangry123
- · Replies 1 ·
Graduate How can a point particle spin?
- Sumo
- · Replies 24 ·
Graduate Optical polarization conversion
- lichen
- · Replies 1 ·
Graduate What is the shape of an electron in an atom?
- Silverback88
- · Replies 3 ·
Graduate Peskin Schröder Chapter 7.1 Field Strength Renormalization
- Phileas.Fogg
- · Replies 3 ·
Graduate Understanding Randomness in Quantum Mechanics (QM)
- Descartz2000
- · Replies 11 ·
Graduate Bound states in relativistic quantum mechanics
- AxiomOfChoice
- · Replies 1 ·
Graduate General Modern Physics questions
- newguy1234
- · Replies 2 ·
Graduate Lowest-order correction for the bendulum
- eman2009
- · Replies 1 ·
Graduate What is principal value integral?
- xylai
- · Replies 3 ·
Graduate Sum of two slater determinants
- wdlang
- · Replies 7 ·
Undergrad Are atoms made of point particles?
- khemix
- · Replies 35 ·
Graduate Classification of schrodinger equation?
- boderam
- · Replies 4 ·
Graduate Is the Frequency of an Electron Realistic for Acceleration in an Accelerator?
- Christophe.V
- · Replies 12 ·
Graduate Translation generators in Schrödinger equation with magnetic field
- FranzDiCoccio
- · Replies 9 ·
Graduate Bell Theorem and probabilty theory
- mn4j
- · Replies 115 ·
Graduate What are the basics of quantum computing for electrical engineers?
- budder8819
- · Replies 3 ·
Graduate What the differ between eigenstate and eigenfunction ?
- eman2009
- · Replies 1 ·
Graduate Determining wether consciousness is required in the double-slit experiment
- entropy1
- · Replies 10 ·
Graduate Gaussian Integral Identity with Grassmann Numbers
- Phileas.Fogg
- · Replies 10 ·
Graduate Why must SUSY algebra close even for invariant Lagrangians?
- nrqed
- · Replies 20 ·
Graduate Quantizing Zero-Frequency Modes: A Challenge
- Manchot
- · Replies 2 ·
Graduate Double slit with orthogonal polarizers and wave function collapse
- maggicmike660
- · Replies 12 ·
Undergrad What counts as an observer in Schrödinger's cat?
- Nick-C
- · Replies 22 ·
Graduate Why does a static electric field have a longitudinal component if photons are transverse?
- captain
- · Replies 1 ·
Graduate Distinguishing between eigenstates
- james477
- · Replies 2 ·
Graduate Double Slit Experiment and Electron Spin
- Wallin
- · Replies 22 ·
Graduate Hardy's paradox
- Count Iblis
- · Replies 5 ·
Graduate Is the Bootstrap Model Still Viable in Modern Particle Physics?
- Descartz2000
- · Replies 2 ·
Graduate Some quantum dynamics simulations
- CharlesConcord
- · Replies 2 ·
Graduate What is the Schrodinger Equation?
- Dynamite
- · Replies 6 ·
Graduate Gedankenexperiment on quantum entanglement
- yorik
- · Replies 6 ·
Graduate Orbital Angular Momentum and Uncertainty?
- LarryS
- · Replies 2 ·
Graduate Can you measure angular momentum of a free particle?
- sanjibghosh
- · Replies 19 ·
Graduate Light (wave and particle theory)
- timjones007
- · Replies 6 ·
Graduate Plot a several energy eigenvalues of a partical
- eman2009
- · Replies 3 ·
Graduate Why Don't Electrons Collide in Orbit?
- koolraj
- · Replies 3 ·
Graduate Momentum operator for a free particle with a definite momentum and Energy
- trelek2
- · Replies 3 ·
Graduate Coulomb potential removes the degnerecay of states
- eman2009
- · Replies 7 ·
Graduate Is entanglement a fundamental resource for quantum information processing?
- sirchasm
- · Replies 5 ·
Graduate Grand unified theories and quantum mechanics
- Vals509
- · Replies 5 ·
Graduate How do non-Hermitian Hamiltonians explain particle decay and quasi-bound states?
- wofsy
- · Replies 5 ·
Graduate What does infinite position uncertainty mean in the uncertainty principle?
- spidey
- · Replies 3 ·
Graduate Solving using schrodinger equation techniques
- amnon_willi
- · Replies 2 ·
Graduate Why do particles annhillate with their particles?
- quantumfireball
- · Replies 29 ·
Graduate Are the stings in string theory, considered to be matter?
- redhedkangaro
- · Replies 51 ·
Graduate Is EPR Really as Confusing as It Seems in Quantum Physics?
- Salivan
- · Replies 3 ·
Graduate Entanglement criterion for identical particle
- AliceBob
- · Replies 1 ·
Graduate Quark Generation: Are Most Quarks in the Universe in Their Least Massive Form?
- DaveBF
- · Replies 4 ·
Graduate How Do Quantum Well Transistors Transport Charge Carriers?
- xpl0it2k3
- · Replies 1 ·
Graduate Symmetry of Quantum vs Classical Physics Systems
- KFC
- · Replies 2 ·
Graduate What is an effective field theory
- RedX
- · Replies 2 ·
Graduate How accurate is the fly-in-figure-eights metaphor for wave functions?
- imjustaguy
- · Replies 8 ·
Graduate Projecting onto an eigenstate when we make a measurement
- AxiomOfChoice
- · Replies 2 ·
Graduate Photobleaching mechanisms in fluorescent dyes and quantum dots
- johnintheuk
- · Replies 1 ·
Graduate Wave-particle duality of light in vacuum
- mysearch
- · Replies 32 ·
Graduate Baker-Campbell-Hausdorff formula question
- Karliski
- · Replies 2 ·
Graduate About bases of complex (Hilbert) space
- KFC
- · Replies 4 ·
Graduate Why are eigenvalues of Jz, Lz and Sz all denoted m?
- rabbit44
- · Replies 1 ·
Graduate Calculating Determinants of Operators
- jarowit
- · Replies 3 ·
Graduate Can Fourier Transformation be Used for Amplitude of a Free Particle?
- karlsson
- · Replies 4 ·
Undergrad Game theory and quantum game theory
- Vals509
- · Replies 1 ·
Graduate Energy of Electrostatic Charge ?
- LarryS
- · Replies 7 ·
Graduate Dirac-Feynman-action principle and pseudo-differential operators
- jostpuur
- · Replies 3 ·
Graduate Hermite polynomial and transformation
- KFC
- · Replies 2 ·
Graduate What is the role of proper time in quantum theory
- pellman
- · Replies 14 ·
Graduate How Does the Stern-Gerlach Experiment Illustrate Quantum Spin Measurement?
- rabbit44
- · Replies 7 ·
Graduate Harmonic oscillator in a time-dependent force
- gibbyboy
- · Replies 4 ·
Graduate Questions about the Double Slit Experiment
- andrewshen123
- · Replies 3 ·
Graduate How to create charge from light?
- per.sundqvist
- · Replies 3 ·
Graduate Integrals in the derivation of the Optical Theorem
- maverick280857
- · Replies 3 ·
Graduate Factor of 'i' and antisymmetrization in Dirac Lagrangian
- JosephButler
- · Replies 7 ·
Graduate Quantum Mechanics and the Nature of Determinism
- Curious6
- · Replies 30 ·
Graduate Reaching absolute zero and BEC
- Vals509
- · Replies 1 ·
Undergrad Proton-electron interactions interms of photons
- mmang
- · Replies 49 ·
Graduate Meaning of zero probability density
- xfshi2000
- · Replies 2 ·
Graduate Position space - momentum space
- alphaone
- · Replies 18 ·
Undergrad Is interference always present in a single slit setup?
- Loren Booda
- · Replies 11 ·
Graduate MS Renormalization: Questions & Answers
- RedX
- · Replies 3 ·
Graduate What are the key concepts in Srednicki's explanation of Feynman diagrams in QFT?
- kexue
- · Replies 35 ·
High School Zeno's Paradox (Quantum Level)
- jmatejka
- · Replies 1 ·
Graduate FAQ says refraction isn’t from absorption and emission
- thenewmans
- · Replies 3 ·
Graduate Proving that d(δx) = δ(dx) in Noether's theorem
- praharmitra
- · Replies 4 ·
Graduate Inherent impossibility of knowing both position and momentum
- Curious6
- · Replies 12 ·
Graduate Inner product on boson one-particle space
- schieghoven
- · Replies 11 ·
Graduate How do you entangle particles?
- Tyris
- · Replies 21 ·
Undergrad Light Wave Particle Confusion: Can 2 Exist in Same Place?
- Emanresu56
- · Replies 1 ·
Graduate Deriving uncertainty principle and Schrödinger equation from [x,p] commutator
- Cluelessluke
- · Replies 6 ·
Graduate Solving the Entanglement Problem: A Quantum Mechanics Tutorial
- acxler8
- · Replies 3 ·
Graduate Old Quantum Theory = Oscillations?
- karkas
- · Replies 6 ·
Graduate Partial Trace For Tripartite Systems
- baid69
- · Replies 1 ·
Undergrad Recreating Thomas Young's Double Slit Experiment
- callisto132
- · Replies 2 ·
Graduate Probability Amplitude and Time Evolution Operator
- erkokite
- · Replies 1 ·
Graduate Solving Mark Srednicki QFT: Exact Propagator Problems (13.12, 13.13, 13.16)
- RedX
- · Replies 5 ·
Graduate Why does [A, [B, C]] + [B, [C, A]] + [C, [A, B]] = 0?
- haitao23
- · Replies 9 ·
Graduate Electron tunneling and classic electrdynamics.
- Austin0
- · Replies 4 ·