Gravitino dark matter from inflaton decay

Fuminobu Takahashi

doi:10.1016/j.physletb.2007.12.048

Gravitino dark matter from inflaton decay

Fuminobu Takahashi

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

22 Citations (Scopus)

Abstract

We discuss a scenario that gravitinos produced non-thermally by an inflaton decay constitute dark matter in the present universe. We find that this scenario is realized for wide ranges of the inflaton mass and the vacuum expectation value. What is intriguing about this scenario is that the gravitino dark matter can have a relatively large free streaming length at matter-radiation equality, which can be probed by future observation on QSO-galaxy strong lens system.

Original language	English
Pages (from-to)	100-106
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	660
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2007.12.048
Publication status	Published - 2008 Feb 21
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2007.12.048

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Gravitino dark matter from inflaton decay

Abstract

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