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arXiv 1407.6017hep-phastro-ph.CO
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关于混合自然暴胀的一个置换

A Permutation on Hybrid Natural Inflation

Christopher D. Carone, Joshua Erlich, Marc Sher, Raymundo Ramos

摘要:

本文分析了一个基于最小非阿贝尔离散群S_3的混合自然暴胀模型。标量势中的主要不变项有一个偶然的全局对称性,它被自发破缺,提供了一个被确定为暴胀子的伪戈德斯通玻色子。S_3对称性既限制了暴胀子势的形式,又限制了暴胀子场与瀑布场的耦合,从而导致暴胀的结束。我们在模型参数空间中识别可行点。虽然在张量模式的功率是小的模型的参数空间的大部分,我们确定的参数选择,产生潜在的可观察值的r没有超普朗克初始值的暴胀场。

英文摘要:

We analyze a model of hybrid natural inflation based on the smallest non-Abelian discrete group S_3. Leading invariant terms in the scalar potential have an accidental global symmetry that is spontaneously broken, providing a pseudo-Goldstone boson that is identified as the inflaton. The S_3 symmetry restricts both the form of the inflaton potential and the couplings of the inflaton field to the waterfall fields responsible for the end of inflation. We identify viable points in the model parameter space. Although the power in tensor modes is small in most of the parameter space of the model, we identify parameter choices that yield potentially observable values of r without super-Planckian initial values of the inflaton field.

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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