arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.10552gr-qcastro-ph.CO
收藏

标准充气后的预热和再加热

Preheating and Reheating after Standard Inflation

Khalil El Bourakadi

摘要:

我们研究了暴胀后的两相情形,其中初始步骤是预热,伴随着微扰再加热的步骤,在该步骤中暴胀子场衰变,将其所有能量转移到相对论粒子,这些粒子的相互作用将朝着热平衡状态演化,温度为再加热温度Tre。据观察,再加热的情况下,通常预测的最大再加热温度,对应于几乎瞬间从通货膨胀到辐射支配时代的过渡。这将自然导致非微扰预热。在这个框架中,我们提出的约束条件表示的宇宙微波背景(CMB)暴胀标量谱指数的再加热持续时间参数。在这项工作中,我们研究了多项式和希格斯暴胀模型与普朗克2018年获得的观测数据的兼容性。

英文摘要:

We study the two-phase scenario following inflation, where the initial step is preheating, accompanied by a step of perturbative reheating at which inflaton field decays transferring all of its energy to create relativistic particles, the interaction of these particles will evolve towards a state of thermal equilibrium with a temperature Tre called the reheating temperature. It is observed that the scenario of reheating normally predicts the maximum reheating temperature that corresponds to an almost instantaneous transition from inflation to the radiation domination era. This will naturally lead to a nonperturbative preheating. In this framework, we propose constraints on the reheating duration parameters expressed in terms of the cosmic microwave background (CMB) inflationary scalar spectral index. In this work, we study the compatibility of polynomial and Higgs models of inflation with the observational data obtained from Planck 2018.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑