Journal
PHYSICS LETTERS B
Volume 700, Issue 3-4, Pages 157-162Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2011.04.067
Keywords
Inflation; Scalaron; Reheating; Leptogenesis; Dark matter
Funding
- Russian Federation [NS-5525.2010.2, 02.740.11.0244, MK-4317.2009.2]
- Russian Foundation for Basic Research [08-02-00473a]
- FAE program [11520, 112598]
- SCOPES program
- Dynasty Foundation
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In R-2-inflation scalaron slow roll is responsible for the inflationary stage, while its oscillations reheat the Universe. We find that the same scalaron decays induced by gravity can also provide the dark matter production and leptogenesis. With R-2-term and three Majorana fermions added to the Standard Model, we arrive at the phenomenologically complete theory capable of simultaneously explaining neutrino oscillations, inflation, reheating, dark matter and baryon asymmetry of the Universe. Besides the seesaw mechanism in neutrino sector, we use only gravity, which solves all the problems by exploiting scalaron. (C) 2011 Elsevier B.V All rights reserved.
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