Helicity Precession of Spin-1/2 Particles in Weak Inertial and Gravitational Fields
High Energy Physics - Phenomenology
2015-06-25 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We calculate the helicity and chirality effects experienced by a spin-1/2 particle subjected to classical electromagnetic and gravitational fields. The helicity evolution is then determined in the non-relativistic, relativistic, and ultra-relativistic regimes. We find that inertia-gravitation can distinguish between helicity and chirality. Helicity is not conserved, in general, even when the particles are massless. In this case, however, the inertial fields can hardly be applied to the fermions.
Keywords
Cite
@article{arxiv.hep-ph/0405296,
title = {Helicity Precession of Spin-1/2 Particles in Weak Inertial and Gravitational Fields},
author = {Dinesh Singh and Nader Mobed and Giorgio Papini},
journal= {arXiv preprint arXiv:hep-ph/0405296},
year = {2015}
}
Comments
17 pages with no figures. Submitted to Nuclear Physics B