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arXiv 1604.04748gr-qc
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暴胀宇宙学导致软型奇点

Inflationary Cosmology Leading to a Soft Type Singularity

I. Brevik, V. V. Obukhov, A. V. Timoshkin

摘要:

现代宇宙学的一个显着性质是它允许对称性的特殊情况,包括使用相同的理论框架描述早期加速(暴胀)和晚期加速的可能性。在本文中,我们考虑各种宇宙学模型对应于一个广义形式的状态方程的流体在一个平坦的弗里德曼-罗伯逊-沃克宇宙,强调的情况下,所谓的IV型奇异通货膨胀是在未来遇到的。这是一种软(非破碎)奇点。得到了导致奇异膨胀的非齐次状态方程的参数值。我们提出的模型,其中有两个IV型奇点,第一个对应的通货膨胀时代的结束,第二个晚的时间事件。我们还研究了导致IV型奇异暴胀的理论慢滚参数与普朗克卫星最近观测到的结果之间的对应关系。

英文摘要:

A remarkable property of modern cosmology is that it allows for a special case of symmetry, consisting in the possibility of describing the early-time acceleration (inflation) and the late-time acceleration using the same theoretical framework. In this paper we consider various cosmological models corresponding to a generalized form for the equation of state for the fluid in a flat Friedmann -Robertson-Walker universe, emphasizing cases where the so-called type IV singular inflation is encountered in the future. This is a soft (non-crushing) kind of singularity. Parameter values for an inhomogeneous equation of state leading to singular inflation are obtained. We present models for which there are two type IV singularities, the first corresponding to the end of the inflationary era and the second to a late time event. We also study the correspondence between the theoretical slow-roll parameters leading to type IV singular inflation and the recent results observed by the Planck satellite.

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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