We utilize a recently proposed cubic nilpotent superfield to realize inflation in supergravity with the minimal degrees of freedom: the inflaton, graviton, and massive gravitino. As an advantage, the resultant model is free from the catastrophic production of gravitinos due to its vanishing propagation speed. However, the model suffers from the standard gravitino problem, and its viability depends on the mass spectrum and the thermal history of the Universe.

中文翻译：

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没有慢引力的最小超重力膨胀

我们利用最近提出的三次幂零超场来实现具有最小自由度的超引力暴胀：暴胀子、引力子和大质量引力子。作为一个优势，由于其消失的传播速度，所得到的模型不会产生 gravitinos 的灾难性产生。然而，该模型存在标准引力问题，其可行性取决于宇宙的质谱和热历史。