论文标题
模块化宇宙学中的有限温度影响
Finite temperature effects in modular cosmology
论文作者
论文摘要
我们通过在标量电位中包括可能的热效应来重新审视宇宙学历史。众所周知的宇宙学模量问题认为，由于其在通货膨胀期间的最终位置，模量储存的初始能量。我们表明，对标量电势的有限温度校正通常会引起相似的效果，并且这些效果可能会从未对准中克服这些效果。这会改变重要参数，例如以模型依赖性方式在通货膨胀期间的E折数量和最终再加热温度的首选窗口。一般含义是较长的较晚模量主导的时期和更大的最终加热温度。我们探索了IIB型超弦中的所有讨论的元素，该元素与Kähler通货膨胀方案有关，其中已知零温度结果。对于这种明确的案例，还进行了使用Floquet方法进行的不稳定性分析，发现在几乎通用的临界温度周围可能产生Oscillon可能产生的有力迹象，在该温度下，Floquet指数显示出不同的行为。
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 Kähler 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.
