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arxiv: 1507.08878 · v1 · pith:MF4JNVBBnew · submitted 2015-07-31 · ✦ hep-th · gr-qc

Stable Emergent Universe -- A Creation without Big-Bang

classification ✦ hep-th gr-qc
keywords universeeffectiveemergentphasestableallowsalternativebig-bang
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Based on an earlier introduced new class of generalized gravity-matter models defined in terms of two independent non-Riemannian 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.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Classical and Semiclassical Stability of Emergent Universes in Jordan-Brans-Dicke Theory

    gr-qc 2021-08 unverdicted novelty 5.0

    In Jordan-Brans-Dicke theory, the Einstein static universe can be made robust against classical perturbations and representative semiclassical tunneling channels by appropriate choices of the JBD potential and model p...