Quantum field theory in the de Sitter universe

Journal Article · Mon Sep 26 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.1746· OSTI ID:6963220

Bros, J; Gazeau, J; Moschella, U ^[1]

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1. Service de Physique Theorique, Centre d'Etudes Nucleaires, de Saclay, 91191 Gif-sur-Yvette (France) Laboratoire de Physique Theorique et Mathematique, Universite Paris 7, 75251 Paris Cedex 05 (France)

We present a study of quantum scalar fields on de Sitter (ds) space-time based on analyticity in the complexified Riemannian manifold; a new expansion of the linear fields in terms of coordinate independent dS plane waves and an explicit form of the propagators at real or imaginary times are given. Our approach controls the thermal properties and the zero-curvature limit of the fields; it provides a general setting for interacting fields, in which some steps are taken: a Kaellen-Lehmann type formula for complete propagators and a treatment of a class of self-energy diagrams and their resummation.

• OSTI ID: 6963220
• Journal Information: Physical Review Letters; (United States), Vol. 73:13; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
UNIVERSE
QUANTUM FIELD THEORY
COMPLEX MANIFOLDS
PROPAGATOR
RIEMANN SPACE
SCALAR FIELDS
SELF-ENERGY
SPACE-TIME
ENERGY
FIELD THEORIES
MATHEMATICAL MANIFOLDS
MATHEMATICAL SPACE
SPACE
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)