Dark matter chaotic inflation in light of BICEP2

Kyohei Mukaida; Kazunori Nakayama

doi:10.1088/1475-7516/2014/08/062

Dark matter chaotic inflation in light of BICEP2

Kyohei Mukaida, Kazunori Nakayama

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We propose an economical model in which a singlet ₂-odd scalar field accounts for the primordial inflation and the present dark matter abundance simultaneously in the light of recent BICEP2 result. Interestingly, the reheating temperature and the thermal dark matter abundance are closely connected by the same interaction between the singlet scalar and the standard model Higgs. In addition, the reheating temperature turns out to be quite high, T_R ≳ 10¹² GeV, and hence the thermal leptogenesis is compatible with this model. Therefore, it can be one of the simplest cosmological scenarios.

Original language	English
Article number	062
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2014
Issue number	8
DOIs	https://doi.org/10.1088/1475-7516/2014/08/062
Publication status	Published - 2014 Aug 1
Externally published	Yes

Keywords

cosmology of theories beyond the SM
inflation
particle physics - cosmology connection
physics of the early universe

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1088/1475-7516/2014/08/062

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AB - We propose an economical model in which a singlet 2-odd scalar field accounts for the primordial inflation and the present dark matter abundance simultaneously in the light of recent BICEP2 result. Interestingly, the reheating temperature and the thermal dark matter abundance are closely connected by the same interaction between the singlet scalar and the standard model Higgs. In addition, the reheating temperature turns out to be quite high, TR ≳ 1012 GeV, and hence the thermal leptogenesis is compatible with this model. Therefore, it can be one of the simplest cosmological scenarios.

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Dark matter chaotic inflation in light of BICEP2

Abstract

Keywords

ASJC Scopus subject areas

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