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arXiv 0804.2858hep-ph
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关于KK引力伴子的膜宇宙学

On the Brane Cosmology of KK Gravitinos

Federico R. Urban

摘要:

在这份报告中,我认为宇宙学的KK引力子的模型与额外的维度,特别是与已知的非标准的高能量制度的膨胀,这是与他们有关。主要结果是,一旦考虑到BBN对衰变中释放的允许熵的限制,这种KK模的产生就与暴胀后的非标准膨胀不相容:没有五维普朗克质量,因此产生的KK引力子相对于BBN是安全的。这一结论适用于只有引力在整个时空中传播的平坦模型和弯曲模型。本报告基于工作arXiv:0705.4227 [hep-ph]。

英文摘要:

In this report I consider the cosmology of KK gravitinos in models with extra dimensions, in particular in connection with the known non--standard high energy regime of expansion which is associated with them. The main result is that the production of such KK modes, once one considers BBN constraints on the allowed entropy released in their decays, is not compatible with non--standard expansion after inflation: there is no five--dimensional Planck mass for which the produced KK gravitinos are safe with respect to BBN. This conclusion holds for both flat and warped models in which only gravity propagates in the full spacetime. This report is based on the work arXiv:0705.4227 [hep-ph].

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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