Discrete symmetries and de Sitter spacetime

Journal Article · Mon Nov 24 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4903010· OSTI ID:22390737

Pascu, Gabriel ^[1]

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1. West University of Timişoara, V. Pârvan Ave. 4, RO-300223 Timişoara (Romania)

Aspects of the ambiguity in defining quantum modes on de Sitter spacetime using a commuting system composed only of differential operators are discussed. Discrete symmetries and their actions on the wavefunction in commonly used coordinate charts are reviewed. It is argued that the system of commuting operators can be supplemented by requiring the invariance of the wavefunction to combined discrete symmetries- a criterion which selects a single state out of the α-vacuum family. Two such members of this family are singled out by particular combined discrete symmetries- states between which exists a well-known thermality relation.

• OSTI ID: 22390737
• Journal Information: AIP Conference Proceedings, Vol. 1634, Issue 1; Conference: TIM-13 Physics Conference, Timisoara (Romania), 21-24 Nov 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMMUTATION RELATIONS
COORDINATES
DE SITTER SPACE
DIAGRAMS
FIELD OPERATORS
SPACE-TIME
SYMMETRY
WAVE FUNCTIONS