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arXiv 2207.01889hep-th
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用新的Fayet-Iliopoulos项实现超引力理论中的慢滚暴胀和MSSM

A Realization of Slow Roll Inflation and the MSSM in Supergravity Theories with New Fayet-Iliopoulos Terms

Hun Jang, Massimo Porrati

摘要:

最近发现了一个新的超引力D项,它与规范的R对称性无关,并被用来构建新的超引力模型。在本文中,我们使用的新的D-项,我们在以前的作品中使用的推广,构建一个超重力模型的慢卷暴胀的最小超对称标准模型的可观察部门。超对称性在隐藏扇区中以高尺度被打破,并通过引力中介传递到可观察扇区。新的D项包含了自由参数,可以给夸克和轻子的标量超伴子和希格斯玻色子以大的质量,同时保持观测粒子的质量不变。高吉诺从向量超多重态的非正则动力学项中得到一个质量。我们还提出了一个简单的论点证明,在充分的一般性,截止$Λ$的有效理论包含新的D-条款永远不会超过超对称性破缺规模。在我们的理论中,暴胀过程中D项与哈勃常数之间的关系也隐含着普适关系$Λ\lesssim \sqrt{H M_{Pl}}$。

英文摘要:

A new supergravity D-term, not associated to gauged R-symmetry, was recently discovered and used to construct new supergravity models. In this paper we use a generalization of the new D-term that we used in previous works, to construct a supergravity model of slow-roll inflation with the observable sector of the minimal supersymmetric standard model. Supersymmetry is broken at a high scale in the hidden sector and communicated to the observable sector by gravity mediation. The new D-term contains free parameters that can give large masses to scalar superpartners of quarks and leptons and to the higgsinos while holding the masses of observed particles fixed. Gauginos receive a mass from a non-canonical kinetic term for the vector supermultiplets. We also present a simple argument proving in full generality that the cutoff $Λ$ of effective theories containing new D-terms can never exceed the supersymmetry breaking scale. In our theory, the relation between D-term and the Hubble constant during inflation also implies the universal relation $Λ\lesssim \sqrt{H M_{Pl}}$.

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