Large-field inflation and supersymmetry breaking
Large-field inflation and supersymmetry breaking
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DOI：
10.1007/jhep09(2014)053
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发表时间：
2014-07
影响因子：
5.4
通讯作者：
W. Buchmüller;E. Dudas;L. Heurtier;Clemens Wieck
中科院分区：
文献类型：
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作者：
W. Buchmüller;E. Dudas;L. Heurtier;Clemens Wieck
大面积通货膨胀是一种有趣且具有预测性的情景。它在超引力中的非平凡嵌入在最近的文献中得到了深入的研究，而它与超对称破缺的相互作用却没有得到深入的研究。我们考虑了含有稳定场的超引力中混沌暴胀的最小可行模型，并增加了一个波隆尼场。此外，我们还研究了最小设置的两种可能的扩展。我们发现存在各种约束：首先，很难将O‘Raifeartaigh扇区与充气扇区耦合，最简单可行的选择是仅通过重力将它们耦合起来。其次，即使在最简单的模型中，引力质量也是从上方以参数形式受到膨胀质量的约束。因此，在一个混乱的膨胀体系中，高尺度超对称破缺是很难实现的。作为一个单独的评论，我们分析了没有稳定场的最简单的混沌膨胀结构，以及超对称稳定的Kähler模。如果没有模数，这样的模型的潜力从下到下是无限的。我们证明，大的模数不能解决这个问题。
Large-field inflation is an interesting and predictive scenario. Its non-trivial embedding in supergravity was intensively studied in the recent literature, whereas its interplay with supersymmetry breaking has been less thoroughly investigated. We consider the minimal viable model of chaotic inflation in supergravity containing a stabilizer field, and add a Polonyi field. Furthermore, we study two possible extensions of the minimal setup. We show that there are various constraints: first of all, it is very hard to couple an O’Raifeartaigh sector with the inflaton sector, the simplest viable option being to couple them only through gravity. Second, even in the simplest model the gravitino mass is bounded from above parametrically by the inflaton mass. Therefore, high-scale supersymmetry breaking is hard to implement in a chaotic inflation setup. As a separate comment we analyze the simplest chaotic inflation construction without a stabilizer field, together with a supersymmetrically stabilized Kähler modulus. Without a modulus, the potential of such a model is unbounded from below. We show that a heavy modulus cannot solve this problem.