Stable emergent Universe – a creation without Big-Bang

E. Guendelman, RAMON ALEJANDRO HERRERA APABLAZA, P. Labrana, E. Nissimov, S. Pacheva

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Based on an earlier introduced new class of generalized gravity-matter models defined in terms of two independent nonRiemannian volume forms (alternative generally covariant integration measure densities) on the space-time manifold, we derive an effective “Einstein-frame” theory featuring the following remarkable properties: (i) We obtain effective potential for the cosmological scalar field possessing two infinitely large flat regions which allows for a unified description of both early Universe inflation as well as of present dark energy epoch; (ii) for a specific parameter range the model possesses a non-singular stable “emergent Universe” solution which describes an initial phase of evolution that precedes the inflationary phase. (

Original languageEnglish
Pages (from-to)810-814
Number of pages5
JournalAstronomische Nachrichten
Volume336
Issue number8-9
DOIs
StatePublished - 1 Jan 2015

Keywords

  • cosmology: theory
  • early universe
  • inflation

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