A spinorial perspective on massless photons
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We exploit the fact that, in Minkowski space-time, gamma matrices are possibly more fundamental than the metric to describe how gauge invariance at perturbative level enforces a Lagrangian for spinor electrodynamics with massless photons. The term quadratic in the potential arises naturally in the gauge-fixed Lagrangian but has vanishing coefficient.
Cite
@article{arxiv.hep-ph/0701013,
title = {A spinorial perspective on massless photons},
author = {Giampiero Esposito},
journal= {arXiv preprint arXiv:hep-ph/0701013},
year = {2008}
}
Comments
5 pages, Plain Tex