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arXiv 1105.0430hep-thastro-ph.COgr-qchep-ph
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大超重力修正的暴胀

Inflation with large supergravity corrections

Anupam Mazumdar, Seshadri Nadathur, Philip Stephens

摘要:

众所周知,哈勃引起的对暴胀子场的大的超引力修正会破坏势能的平坦性,从而在慢卷暴胀和超引力之间产生张力。在本文中,我们表明,它是可能的,以获得一个{ \it宇宙学平坦}的方向,嵌入在最小的超对称标准模型,尽管非常大的超哈勃修正。作为一个例子,我们表明,一个平坦的方向,这是解除$n=6$运营商匹配当前的宇宙微波背景数据的哈勃参数,$10^{5} {\rm GeV}\lesssim H_{inf}\lesssim 10^{8.5}$ GeV的范围很广。我们的方法可以应用到任何$F$ -长期通货膨胀模型。

英文摘要:

It is well known that large Hubble-induced supergravity corrections to the inflaton field can ruin the flatness of the potential, thus creating a tension between slow-roll inflation and supergravity. In this paper we show that it is possible to obtain a {\it cosmologically flat} direction, embedded within the minimal supersymmetric standard model, despite very large super-Hubble corrections. As an illustration, we show that a flat direction which is lifted by an $n=6$ operator matches the current cosmic microwave background data for a wide range of the Hubble parameter, $10^{5} {\rm GeV}\lesssim H_{inf}\lesssim 10^{8.5}$ GeV. Our approach can be applied to any $F$-term inflationary model.

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