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Title

Perdurance of multiply connected de Sitter space

AuthorsGonzález-Díaz, Pedro F.
Keywords[PACS] Particle-theory and field-theory models of the early Universe
related approximations
[PACS] Post-Newtonian approximation
perturbation theory
[PACS] Spacetime topology, causal structure, spinor structure
Issue Date1999
PublisherAmerican Physical Society
CitationPhysical Review D - Particles, Fields, Gravitation and Cosmology 59: 1- 13 (1999)
AbstractThis paper deals with a study of the effects that spherically symmetric first-order metric perturbations and vacuum quantum fluctuations have on the stability of the multiply connected de Sitter spacetime recently proposed by Gott and Li. It is the main conclusion of this study that although such a spacetime is stable to the classical metric perturbations for any size of the nonchronal region, it is only stable against the quantum fluctuations of vacuum if the size of the multiply connected region is of the order of the Planck scale. Therefore, boundary conditions for the state of the universe based on the notion that the universe created itself in a regime where closed timelike curves were active and stable still appear to be physically and philosophically well supported as are those boundary conditions relying on the notion that the universe was created out of nothing. ©1999 The American Physical Society.
URIhttp://hdl.handle.net/10261/100437
DOI10.1103/PhysRevD.59.123513
Identifiersdoi: 10.1103/PhysRevD.59.123513
issn: 0556-2821
Appears in Collections:(CFMAC-IFF) Artículos
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