Deformations of quantum field theories on de Sitter spacetime
arXiv:1105.4856 · doi:10.1063/1.3653545
Abstract
Quantum field theories on de Sitter spacetime with global U(1) gauge symmetry are deformed using the joint action of the internal symmetry group and a one-parameter group of boosts. The resulting theory turns out to be wedge-local and non-isomorphic to the initial one for a class of theories, including the free charged Dirac field. The properties of deformed models coming from inclusions of CAR-algebras are studied in detail.
26 pages, no figures