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Reheating after swampland conjecture
Journal of High Energy Physics ( IF 5.0 ) Pub Date : 2020-01-01 , DOI: 10.1007/jhep01(2020)092
Vahid Kamali

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 the 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 accelerated expansion of the universe where the inflaton rolls nearly steep potential and the universe will be radiation dominated without any separated reheating epoch.

中文翻译:

沼泽地猜想后的重新加热

宇宙的演化始于一个炽热而密集的大爆炸点。宇宙微波背景辐射(CMB)的温度波动图和大尺度结构(LSS)的初始种子在很早的时候就可以用暴胀期来解释。暴胀子作为暴胀场的量子负责宇宙的加速膨胀。自相互作用单场模型的潜力受到观测数据和量子引力的限制。一些形式的势是由普朗克卫星的数据推出的,而另一些则是由量子引力约束推出的。在暴胀或冷暴胀的标准模型中,首先宇宙膨胀,暴胀子滚动势能的近乎平坦的部分,然后在第二部分,宇宙重新加热,暴胀子在势能的最小值附近振荡,这导致热化辐射主导宇宙。弦理论作为量子引力的最佳模型禁止在再加热的热化时期围绕势能最小值的振荡。但在膨胀的暖模型中,热化发生在宇宙加速膨胀期间,膨胀子滚动的势能接近陡峭,宇宙将以辐射为主,没有任何分离的再加热时期。
更新日期:2020-01-01
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