Inflation may occur while rolling into the metastable supersymmetry-breaking vacuum of massive supersymmetric QCD. We explore the range of parameters in which slow-roll inflation and long-lived metastable supersymmetry breaking may be simultaneously realized. The end of slow-roll inflation in this context coincides with the spontaneous breaking of a global symmetry, which may give rise to significant curvature perturbations via inhomogenous preheating. Such spontaneous symmetry breaking at the end of inflation may give rise to observable non-gaussianities, distinguishing this scenario from more conventional models of supersymmetric hybrid inflation.
Direct Mediation and Metastable Supersymmetry Breaking for SO(10)
研究了Intriligator，Seiberg and Shih（ISS）的亚稳态$\mathcal{N}=1$宏观SO（N）SQCD模型.我们引入了各种重子和介子变形，包括多迹算子，并探讨了将标准模型的SO（10）父模型嵌入到两个弱规范味扇区中。直接的基本信使和对称的伪模量信使介导超对称性破缺到MSSM。Gaugino和sfermion质量计算和比较每种变形类型。我们还探索降低ISS模型的磁夸克矩阵的秩，并找到一个额外的基本信使。
Dynamical breaking of U(1)_{R} and supersymmetry in a metastable vacuum
我们考虑了Intriligator，Seiberg和Shih（ISS）的亚稳N=1 QCD模型，通过在超势中加入重子项而变形。这种简单的形变导致亚稳真空的近似R对称性的自发破缺。然后我们对味SU（5）_f进行规范，并将其与标准模型（SM）的母规范对称性相一致。这实现了超对称破缺的直接调解，而不需要额外的信使扇区。合理地选择参数，可以得到正确数量级的高吉诺质量。最后，我们推测整个“ISS x SM”模型应该被解释为一个（未知的）渐近自由理论的磁对偶。
If supersymmetry is broken in metastable vacua, it is not clear why we are now in there rather than supersymmetric vacua. Moreover, it is natural to expect that we were in supersymmetric vacua, which have higher symmetry than metastable vacua, in the early universe. In this paper, we reexamine and improve the previous analysis on the cosmological evolution of the vacuum structure in the ISS model of metastable supersymmetry breaking by taking into account constraints on the reheating temperature, which is needed to avoid the overproduction of gravitinos. It turns out that the desired phase tra…
