Exact Gravitational Gauge Structures and the Dirac Equation
arXiv:hep-th/9804171
Abstract
Exact gauge structures arise in the evolution of spin-1/2 particles in conformally flat space-times. The corresponding Berry potentials can be Abelian or non-Abelian depending on the mass degeneracy of the system considered. Examples include de Sitter universes and maximal acceleration.
LaTex file, 9 pages, to be published in Il Nuovo Cimento B