Prospects of determination of reheating temperature after inflation by DECIGO

Sachiko Kuroyanagi; Kazunori Nakayama; Jun'ichi Yokoyama

doi:10.1093/ptep/ptu176

Prospects of determination of reheating temperature after inflation by DECIGO

Sachiko Kuroyanagi, Kazunori Nakayama, Jun'ichi Yokoyama

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

22 Citations (Scopus)

Abstract

If the tensor-to-scalar ratio r of cosmological perturbations takes a large value r∼0.1, which may be inferred from the recent BICEP2 result, we can hope to determine thermal history, in particular, the reheating temperature, T_R, after inflation by space-based laser interferometers. It is shown that upgraded and upshifted versions of DECIGO may be able to determine T_R if it lies in the range 6×10⁶<T_R <5×10⁷GeV and 3×10⁷<T_R<2×10⁸GeV, respectively. Although these ranges include predictions of some currently plausible inflation models, because each specification can probe T_R of a range of at most a decade, we should determine the specifications of DECIGO taking full account of the constraints on inflation models to be obtained by near-future observations of temperature anisotropy and B-model polarization of the cosmic microwave background radiation.

Original language	English
Journal	Progress of Theoretical and Experimental Physics
Volume	2015
Issue number	1
DOIs	https://doi.org/10.1093/ptep/ptu176
Publication status	Published - 2014 Oct 10
Externally published	Yes

Keywords

E02
E75
E80

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1093/ptep/ptu176

Cite this

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AU - Kuroyanagi, Sachiko

AU - Nakayama, Kazunori

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Prospects of determination of reheating temperature after inflation by DECIGO

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