Dilaton and axion are ubiquitous in extended supergravities and closed superstrings. We propose new models of modular inflation in four-dimensional $N=1$ supergravity coupled to the chiral dilaton–axion–goldstino supermultiplet, which fit some necessary conditions of superstring cosmology. The model parameters are tuned to obey precision measurements of the cosmic microwave background radiation. We employ the modular-invariant superpotentials and asymptotically modular-invariant Kähler potentials, and achieve axion stabilization with high-scale supersymmetry breaking.

中文翻译：

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超重力下的 Dilaton-Axion 模块化膨胀

膨胀子和轴子在扩展超重力和闭合超弦中无处不在。我们提出了四维模块化膨胀的新模型$氮=1$超引力与手性膨胀子-轴子-金斯蒂诺超多重态耦合，符合超弦宇宙学的一些必要条件。模型参数经过调整以服从宇宙微波背景辐射的精确测量。我们采用模不变超势和渐近模不变凯勒势，并通过大规模超对称破缺实现轴子稳定。