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arXiv 2102.00326gr-qcastro-ph.CO
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变膨胀状态方程与再加热

Variable Inflaton Equation of State and Reheating

Alessandro Di Marco, Gianfranco Pradisi

摘要:

我们在暴胀后微扰玻尔兹曼再加热的背景下探索了与时间相关的暴胀状态方程(EoS)参数的后果。特别地,我们数值求解了包含暴胀能量密度、辐射能量密度以及相关熵密度和粒子热浴温度的微扰耦合Boltzmann方程组。我们利用合理的Ansätze的EoS和讨论的Boltzmann系统的鲁棒性。我们还评论可能的微观起源与时间相关的暴胀子潜力,讨论预热阶段和相关的(原始)引力波的后果。

英文摘要:

We explore the consequences of a time-dependent inflaton Equation-of-State (EoS) parameter in the context of the post-inflationary perturbative Boltzmann reheating. In particular, we numerically solve the perturbative coupled system of Boltzmann equations involving the inflaton energy density, the radiation energy density and the related entropy density and temperature of the produced particle thermal bath. We exploit reasonable Ansätze for the EoS and discuss the robustness of the Boltzmann system. We also comment on the possible microscopic origin related to a time dependent inflaton potential, discussing the consequences on a preheating stage and the related (primordial) gravitational waves.

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。

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