We revisit the cosmological history in the presence of light moduli by including possible thermal effects in the scalar potential. The well known cosmological moduli problem regards initial energy stored in the moduli due to a misalignment from its final position during inflation. We show that finite temperature corrections to the scalar potential, in general, induce similar effects and these are likely to overcome the ones from the misalignment. This changes important parameters like the preferred window for the numbers of e-fold during inflation and the final reheating temperature in a model-dependent manner. The general implications are a longer late modulus dominated epoch and a larger final reheating temperature. We explore all the discussed elements in type-IIB superstring Large Volume Compactification with a Kahler inflationary scenario, where zero temperature results are known. An instability analysis, using a Floquet approach, is also performed for this explicit case finding strong indications of possible oscillon production around a nearly universal normalized critical temperature, where the Floquet exponents show a divergent behaviour.

中文翻译：

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模块化宇宙学中的有限温度效应

我们通过在标量势中包括可能的热效应来重新审视存在光模量的宇宙学历史。众所周知的宇宙学模量问题涉及由于膨胀期间其最终位置未对准而存储在模量中的初始能量。我们表明，对标量势的有限温度校正通常会引起类似的影响，并且这些可能会克服未对准引起的影响。这会以依赖于模型的方式更改重要参数，例如充气期间 e 折叠次数的首选窗口和最终再加热温度。一般含义是更长的后期模量主导时期和更大的最终再加热温度。我们在 Kahler 暴胀场景中探索了 IIB 型超弦大体积压缩中所有讨论的元素，其中零温度结果已知。还使用 Floquet 方法对这个显式情况进行了不稳定性分析，发现在几乎普遍的归一化临界温度附近可能产生振荡的强烈迹象，其中 Floquet 指数显示出不同的行为。