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.

Topics
CAR algebra, Lie algebras, Riemannian geometry, Minkowski space, C*-algebra, Particle symmetry, Quantum field theory, Gauge symmetry, Gauge group, Dirac fields
© 2011 American Institute of Physics.
2011
American Institute of Physics
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