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Title: Inflation and dark energy from f(R) gravity

The standard Starobinsky inflation has been extended to the R + α R{sup n} - β R{sup 2-n} model to obtain a stable minimum of the Einstein frame scalar potential of the auxiliary field. As a result we have obtained obtain a scalar potential with non-zero value of residual vacuum energy, which may be a source of Dark Energy. Our results can be easily consistent with PLANCK or BICEP2 data for appropriate choices of the value of n.
Authors:
 [1] ;  [2]
  1. Department of Physics, Beijing Normal University, Beijing 100875 (China)
  2. Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, ul. Hoża 69, 00-681 Warszawa (Poland)
Publication Date:
OSTI Identifier:
22375871
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL INFLATION; GRAVITATION; NONLUMINOUS MATTER; POTENTIALS; SCALARS