Berry phase for spin--1/2 particles moving in a spacetime with torsion
General Relativity and Quantum Cosmology
2009-01-07 v2 High Energy Physics - Theory
Abstract
Berry phase for a spin--1/2 particle moving in a flat spacetime with torsion is investigated in the context of the Einstein-Cartan-Dirac model. It is shown that if the torsion is due to a dense polarized background, then there is a Berry phase only if the fermion is massless and its momentum is perpendicular to the direction of the background polarization. The order of magnitude of this Berry phase is discussed in other theoretical frameworks.
Cite
@article{arxiv.gr-qc/0009067,
title = {Berry phase for spin--1/2 particles moving in a spacetime with torsion},
author = {M. Alimohammadi and A. Shariati},
journal= {arXiv preprint arXiv:gr-qc/0009067},
year = {2009}
}
Comments
9 pages. Some typos corrected, a discussion on propagating torsion is added, accepted for publication in Eur. Phys. J. C (2001)