Formal aspects of spin currents in material media
High Energy Physics - Theory
2012-08-31 v1 Mesoscale and Nanoscale Physics
Abstract
The relativistic generalization of the broken continuity equation that describes spin currents is exploited in general material media. The field theoretical techniques for the usual U(1) gauge theory with fermions in material media is employed. The spin current equations are obtained from the study of the symmetries of electrodynamics in material media. Moreover, we obtain the conditions that constrain the spin current to be conserved. One of the novel results is that the analogue spin current for the photon can be also defined. In the latter case, the conditions are useful constraints on the fields and the properties of the media.
Keywords
Cite
@article{arxiv.1208.6047,
title = {Formal aspects of spin currents in material media},
author = {T. R. S. Santos and R. F. Sobreiro and V. J. Vasquez Otoya},
journal= {arXiv preprint arXiv:1208.6047},
year = {2012}
}
Comments
10 pages. No figures. arXiv admin note: text overlap with arXiv:1107.0332