标题： 简单的无sinflaton的$α$吸引子 显示英文标题

标题： Simple Sinflaton-less $α$-attractors

摘要： 我们构造了超引力中最简单的$\alpha$-吸引子膨胀模型：它只有一个标量场，即暴胀场。 由于暴胀场属于一个正交幂零超场，不存在sinflaton（sinflaton依赖于费米子双线性）。 当局部超对称性被固定时，这些模型仅包含一个实标量场（暴胀场）、一个引力子和一个大质量的引力子。 在规范场中，sinflaton、sgoldstino 和 inflatino 都从物理谱中消失。 正交条件为暴胀场提供了最简单的Kähler势，同时保留了$\alpha$-吸引子的Poincaré圆盘几何结构。 这些模型在$\overline {D3}$引导的几何膨胀框架下尤为简单。 显示英文摘要

摘要： We construct the simplest inflationary $\alpha$-attractor models in supergravity: it has only one scalar, the inflaton. There is no sinflaton since the inflaton belongs to an orthogonal nilpotent superfield where the sinflaton depends on fermion bilinears. When the local supersymmetry is gauge-fixed, these models have only one single real scalar (the inflaton), a graviton and a massive gravitino. The sinflaton, sgoldstino and inflatino are all absent from the physical spectrum in the unitary gauge. The orthogonality condition leads to the simplest K\"ahler potential for the inflaton, while preserving the Poincar\'e disk geometry of $\alpha$-attractors. The models are particularly simple in the framework of the $\overline {D3}$ induced geometric inflation.