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arXiv 1902.00701gr-qc
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沼泽地猜想后的再加热

Reheating After Swampland Conjecture

Vahid Kamali

摘要:

宇宙的演化是从一个炽热而致密的大爆炸点开始的。用早期暴胀周期解释了宇宙微波背景(CMB)辐射的温度涨落图和大尺度结构(LSS)的初始种子。暴胀子作为暴胀场的量子,是宇宙加速膨胀的原因。自相互作用单场模型的势受到观测数据和量子引力的约束。一些形式的势是由普朗克卫星的数据推出的,一些是由量子引力约束推出的。在暴胀或冷暴胀的标准模型中,宇宙首先膨胀,其中暴胀子滚动势的近平坦部分,并且在第二部分中,宇宙再加热,其中暴胀子围绕势的最小值振荡,这导致热化辐射主导宇宙。弦论作为量子引力的最佳模型,在再加热的热化阶段,不允许势能在最小值附近振荡。但在暖的暴胀模型中,热化发生在宇宙膨胀期间,在那里暴胀子滚动接近陡峭的势,宇宙将是辐射主导的,没有任何分离的再加热时期。

英文摘要:

The evolution of the universe started from a hot and dense Big Bang point. Temperature fluctuation map of cosmic microwave background (CMB) radiation and initial seeds of large scale structures (LSS) are explained by an inflationary period in a very early time. Inflaton as quanta of inflation field is responsible for the accelerated expansion of the universe. Potentials of the self-interacting single field models are constrained by observational data as well as quantum gravity. Some forms of the potential are rolled out by data of Planck satellite and some of them by quantum gravity constraints. In the standard model of inflation or cold inflation firstly universe expands where the inflaton rolls the nearly flat part of the potential and in the second part, the universe reheats where the inflaton oscillates around the minimum of the potential which leads to thermalized radiation dominated universe. String theory as the best model of quantum gravity forbids the oscillation around the minimum of the potential during the thermalized epoch of the reheating. But in the warm model of inflation thermalization happens during the expansion of the universe where the inflaton rolls nearly steep potential and the universe will be radiation dominated without any separated reheating epoch.

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