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 language | English |
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Pages (from-to) | 810-814 |
Number of pages | 5 |
Journal | Astronomische Nachrichten |
Volume | 336 |
Issue number | 8-9 |
DOIs | |
State | Published - 1 Nov 2015 |
Keywords
- cosmology: theory
- early universe
- inflation
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science