Deformations of quantum field theories on de Sitter spacetime
classification
🧮 math-ph
hep-thmath.MP
keywords
fieldtheoriesdeformedgroupquantumsitterspacetimesymmetry
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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.
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