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arXiv 0708.2045hep-thastro-phhep-ph
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多场暴胀的可持续性与弦标度上的界

Sustainability of multi-field inflation and bound on string scale

Jinn-Ouk Gong

摘要:

研究了多场模型中暴胀子场间相互作用项对暴胀动力学的影响。利用幂律型势和相互作用,e折叠的总数可能会大大减少,并可能导致不可接受的短时间暴胀。我们还指出,这可以放置一个边界上的基础理论,如弦论的特征尺度。利用弦论中的一个简单的多场混沌暴胀模型,弦的尺度被限制为大于大统一理论的尺度。

英文摘要:

We study the effects of the interaction terms between the inflaton fields on the inflationary dynamics in multi-field models. With power law type potential and interactions, the total number of e-folds may get considerably reduced and can lead to unacceptably short period of inflation. Also we point out that this can place a bound on the characteristic scale of the underlying theory such as string theory. Using a simple multi-field chaotic inflation model from string theory, the string scale is constrained to be larger than the scale of grand unified theory.

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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