New post in Quantum-electrodynamics

Why not anything like spontaneous absorption?

June 23rd, 2020

Is the fine structure constant actually a constant or does its value depend on the energy scale?

August 1st, 2022

By what mechanism is a photon emitted or absorbed in atomic electron state transitions?

February 17th, 2020

QED lagrangian: gauge fixing term

August 1st, 2022

How to deduce existence of photons by applying quantum mechanics to Maxwell's equations

August 5th, 2021

If the electron is point like, then what is the significance of the classical radius of the electron?

January 16th, 2020

How do annihilation and creation operators act on fermions?

November 2nd, 2020

What are hot electrons?

May 13th, 2021

What is the difference between QED and quantum optics?

May 1st, 2020

Gupta-Bleuler and Lorenz Gauge: I don't understand the principle behind Gupta-Bleuler

January 31st, 2020

Electric current $j^{\mu}$ in standard QED vs. scalar QED

August 1st, 2022

What creates voltage? What causes electrons to move in a wire?

August 1st, 2022

Charge Renormalization and Photon Propagator

October 5th, 2020

Geometrical significance of gauge invariance of the QED Lagrangian

August 1st, 2022

Peskin's book page 334 proof of $Z_1=Z_2$ to all orders in QED perturbation theory

February 7th, 2020

Why muonium is unstable?

August 1st, 2022

Massless $\lambda \phi^4$ QFT

August 1st, 2022

How does one show using QED that same/opposite electric charges repel/attract each other, respectively?

August 1st, 2022

Can photons travel faster than $c$? (Feynman Lectures)

February 8th, 2021

How to correctly understand these "1-particle-irreducible insertions"?

November 23rd, 2020

Why doesn't photon lose energy over distance?

August 1st, 2022

Why is it important that the vector current should be conserved in QED?

December 24th, 2020

Polarization Sums in QCD for the calculation of parton model splitting functions

September 9th, 2020

What forbids the existence of a $\lambda (A^\mu A_\mu)^2$ term in the Stueckelberg action?

February 22nd, 2020

Determinant of Dirac operator in flat space?

January 29th, 2020

Why must the electron's electric dipole moment (EDM) always be aligned with the spin?

August 1st, 2022

Is there a way to calculate the photoelectric effect in QED via a Feynman diagram?

February 4th, 2020

QED Vertex Factor/Rule

October 25th, 2020

What's the relation between virtual photons and electromagnetic potentials?

August 1st, 2022

critical electric field that spontaneously generates real pairs

September 13th, 2020