Gravitino dark matter from inflaton decay

Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)100-106
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume660
Issue number3
DOIs
Publication statusPublished - 2008 Feb 21

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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