Quantum back reaction in integrable cosmology

M. Hotta, Y. Suzuki, Y. Tamiya, Motohiko Yoshimura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Two-dimensional dilaton gravity theories with a conserved current admit analytic integration of quantum back reaction in the semiclassical limit, yielding only a few classes of homogeneous cosmological solutions. One class of solutions describe a toy model of an inflationary universe which decays into a flat universe due to quantum back reaction, despite the apparent presence of a cosmological constant, thus providing a possible resolution of the cosmological constant problem. In another class of solutions the semiclassical approximation breaks down either initially or finally in the cosmological evolution.

Original languageEnglish
Pages (from-to)707-712
Number of pages6
JournalPhysical Review D
Volume48
Issue number2
DOIs
Publication statusPublished - 1993
Externally publishedYes

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cosmology
universe
breakdown
gravitation
decay
approximation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Quantum back reaction in integrable cosmology. / Hotta, M.; Suzuki, Y.; Tamiya, Y.; Yoshimura, Motohiko.

In: Physical Review D, Vol. 48, No. 2, 1993, p. 707-712.

Research output: Contribution to journalArticle

Hotta, M. ; Suzuki, Y. ; Tamiya, Y. ; Yoshimura, Motohiko. / Quantum back reaction in integrable cosmology. In: Physical Review D. 1993 ; Vol. 48, No. 2. pp. 707-712.
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