Quantum decay of a de Sitter universe and inflation without fine-tuning in 1 + 1 dimensions

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5 Citations (Scopus)

Abstract

The problem of back reaction is investigated in a model of evolving de Sitter spacetime. It is shown in the leading semiclassical approximation to a dilaton gravity theory that a quantum correction gives rise to a decay of a de Sitter spacetime without encountering a curvature singularity. As an application this model may serve as a prototype of the inflationary scenario followed by a hot big bang free from the fine-tuning problem of a cosmological constant.

Original languageEnglish
Pages (from-to)5389-5393
Number of pages5
JournalPhysical Review D
Volume47
Issue number12
DOIs
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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