Semiclassical limit of the Dirac equation and spin precession
Quantum Physics
2009-10-31 v1
Abstract
We study the Dirac equation with slowly varying external potentials. Using matrix-valued Wigner functions we prove that the electron follows with high precision the classical orbit and that the spin precesses according to the BMT equation with gyromagnetic ratio g=2.
Cite
@article{arxiv.quant-ph/9911065,
title = {Semiclassical limit of the Dirac equation and spin precession},
author = {Herbert Spohn},
journal= {arXiv preprint arXiv:quant-ph/9911065},
year = {2009}
}