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arXiv 0705.0579hep-phastro-phhep-th
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Inflaton衰变中的引力子暗物质

Gravitino Dark Matter from Inflaton Decay

Fuminobu Takahashi

摘要:

我们讨论了一个方案,即引力子产生的非热的暴胀衰变构成暗物质在目前的宇宙。我们发现,这种情况下实现了宽范围的暴胀子质量和真空的期望值。有趣的是,引力子暗物质在物质辐射相等的情况下,可以有一个相对较大的自由流长度,这一点可以通过对类星体-星系强透镜系统的进一步观测来探索。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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