标题： 从Kähler上抬的意外膨胀 显示英文标题

标题： Accidental Inflation from Kähler Uplifting

摘要： 我们分析在Kähler上提场景中实现膨胀后dS真空的可能性。 将多个量子修正包括到4维有效作用量中，可以避开之前的无解定理，并允许构建简单且成功的弦论膨胀模型。 几个基准模型的预测与当前观测一致，即红谱指数、可忽略的非高斯性以及与最简单的膨胀模型相似的谱形变。 一类特别有趣的模型是“向左滚动”模型，在这种模型中，紧致化维度的整体体积在膨胀期间收缩。 我们将这一现象称为“通过收缩实现的膨胀”（IBD），其中收缩指的是内部流形。 这类模型具有吸引人的特点，即对初始条件不敏感，避免了过度滚动问题，并允许可观测的运行$\alpha$~ 0.012 和增强的张量标量比$r$~$10^{-5}$。 后一结果与许多弦论膨胀模型显著不同。 显示英文摘要

摘要： We analyze the possibility of realizing inflation with a subsequent dS vacuum in the K\"ahler uplifting scenario. The inclusion of several quantum corrections to the 4d effective action evades previous no-go theorems and allows for construction of simple and successful models of string inflation. The predictions of several benchmark models are in accord with current observations, i.e., a red spectral index, negligible non-gaussianity, and spectral distortions similar to the simplest models of inflation. A particularly interesting subclass of models are "left-rolling" ones, where the overall volume of the compactified dimensions shrinks during inflation. We call this phenomenon "inflation by deflation" (IBD), where deflation refers to the internal manifold. This subclass has the appealing features of being insensitive to initial conditions, avoiding the overshooting problem, and allowing for observable running $\alpha$ ~ 0.012 and enhanced tensor-to-scalar ratio $r$ ~ $10^{-5}$. The latter results differ significantly from many string inflation models.