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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1108.2659hep-thastro-ph.COgr-qchep-ph
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字符串模膨胀:概述

String moduli inflation: an overview

Michele Cicoli, Fernando Quevedo

摘要:

我们提出了一个概述的暴胀模型来自弦论,主要集中在封闭弦模作为暴胀子。在详细讨论了eta问题和不同的方法来解决它,我们描述了可能的方法来获得一个德西特真空与所有闭弦模量稳定。然后,我们寻找通货膨胀的方向,并提出了一些最有希望的情况下,inflatons是真实的或虚部的凯勒模量。我们特别注意提取潜在的可观测的影响,显示如何大多数情况下预测可以忽略不计的引力波,因此可以排除普朗克卫星。最后,我们简要地提到了弦宇宙学中除了导出暴胀之外的一些公开挑战。

英文摘要:

We present an overview of inflationary models derived from string theory focusing mostly on closed string moduli as inflatons. After a detailed discussion of the eta-problem and different approaches to address it, we describe possible ways to obtain a de Sitter vacuum with all closed string moduli stabilised. We then look for inflationary directions and present some of the most promising scenarios where the inflatons are either the real or the imaginary part of Kaehler moduli. We pay particular attention on extracting potential observable implications, showing how most of the scenarios predict negligible gravitational waves and could therefore be ruled out by the Planck satellite. We conclude by briefly mentioning some open challenges in string cosmology beyond deriving just inflation.

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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