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Quantum-electrodynamics
New post in Quantum-electrodynamics
Why not anything like spontaneous absorption?
June 23rd, 2020
quantum-mechanics
quantum-electrodynamics
atomic-physics
visible-light
quantum-field-theory
Is the fine structure constant actually a constant or does its value depend on the energy scale?
August 1st, 2022
quantum-electrodynamics
physical-constants
By what mechanism is a photon emitted or absorbed in atomic electron state transitions?
February 17th, 2020
quantum-electrodynamics
photons
electrons
electromagnetism
atomic-physics
QED lagrangian: gauge fixing term
August 1st, 2022
gauge
gauge-invariance
quantum-electrodynamics
lagrangian-formalism
electromagnetism
How to deduce existence of photons by applying quantum mechanics to Maxwell's equations
August 5th, 2021
photons
maxwell-equations
quantum-electrodynamics
electromagnetic-radiation
quantum-mechanics
If the electron is point like, then what is the significance of the classical radius of the electron?
January 16th, 2020
scales
particle-physics
standard-model
quantum-electrodynamics
How do annihilation and creation operators act on fermions?
November 2nd, 2020
fermions
quantum-electrodynamics
hilbert-space
operators
quantum-field-theory
What are hot electrons?
May 13th, 2021
quantum-electrodynamics
plasmon
classical-electrodynamics
solid-state-physics
What is the difference between QED and quantum optics?
May 1st, 2020
quantum-optics
quantum-electrodynamics
Gupta-Bleuler and Lorenz Gauge: I don't understand the principle behind Gupta-Bleuler
January 31st, 2020
quantum-field-theory
gauge-theory
quantum-electrodynamics
quantization
Electric current $j^{\mu}$ in standard QED vs. scalar QED
August 1st, 2022
gauge-invariance
lagrangian-formalism
quantum-electrodynamics
electric-current
What creates voltage? What causes electrons to move in a wire?
August 1st, 2022
electric-circuits
electrons
electric-current
quantum-electrodynamics
voltage
Charge Renormalization and Photon Propagator
October 5th, 2020
quantum-electrodynamics
scattering
renormalization
quantum-field-theory
Geometrical significance of gauge invariance of the QED Lagrangian
August 1st, 2022
gauge-theory
quantum-field-theory
quantum-electrodynamics
Peskin's book page 334 proof of $Z_1=Z_2$ to all orders in QED perturbation theory
February 7th, 2020
perturbation-theory
ward-identity
quantum-field-theory
renormalization
quantum-electrodynamics
Why muonium is unstable?
August 1st, 2022
quantum-electrodynamics
particle-physics
quantum-field-theory
Massless $\lambda \phi^4$ QFT
August 1st, 2022
renormalization
quantum-field-theory
quantum-electrodynamics
How does one show using QED that same/opposite electric charges repel/attract each other, respectively?
August 1st, 2022
electrostatics
electromagnetism
quantum-spin
quantum-electrodynamics
coulombs-law
Can photons travel faster than $c$? (Feynman Lectures)
February 8th, 2021
faster-than-light
path-integral
virtual-particles
quantum-electrodynamics
How to correctly understand these "1-particle-irreducible insertions"?
November 23rd, 2020
quantum-field-theory
quantum-electrodynamics
feynman-diagrams
1pi-effective-action
self-energy
Why doesn't photon lose energy over distance?
August 1st, 2022
energy-conservation
visible-light
electromagnetic-radiation
photons
quantum-electrodynamics
Why is it important that the vector current should be conserved in QED?
December 24th, 2020
quantum-field-theory
conservation-laws
gauge-theory
quantum-electrodynamics
quantum-anomalies
Polarization Sums in QCD for the calculation of parton model splitting functions
September 9th, 2020
quantum-field-theory
particle-physics
gauge-theory
quantum-electrodynamics
quantum-chromodynamics
What forbids the existence of a $\lambda (A^\mu A_\mu)^2$ term in the Stueckelberg action?
February 22nd, 2020
higgs
renormalization
quantum-electrodynamics
gauge-theory
lagrangian-formalism
Determinant of Dirac operator in flat space?
January 29th, 2020
functional-determinants
dirac-equation
quantum-electrodynamics
Why must the electron's electric dipole moment (EDM) always be aligned with the spin?
August 1st, 2022
dipole-moment
quantum-electrodynamics
quantum-spin
electrons
electromagnetism
Is there a way to calculate the photoelectric effect in QED via a Feynman diagram?
February 4th, 2020
quantum-electrodynamics
photoelectric-effect
feynman-diagrams
QED Vertex Factor/Rule
October 25th, 2020
feynman-diagrams
quantum-electrodynamics
quantum-field-theory
What's the relation between virtual photons and electromagnetic potentials?
August 1st, 2022
virtual-particles
electromagnetism
quantum-field-theory
quantum-electrodynamics
critical electric field that spontaneously generates real pairs
September 13th, 2020
pair-production
quantum-electrodynamics
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