Dissipative Effects on Reheating after Inflation
Dissipative Effects on Reheating after Inflation
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DOI：
10.1088/1475-7516/2013/03/002
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发表时间：
2012-12
影响因子：
6.4
通讯作者：
K. Mukaida;K. Nakayama
中科院分区：
文献类型：
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作者：
K. Mukaida;K. Nakayama
膨胀子在膨胀后必须将其能量转化为辐射，在传统的情况下，这是由微扰的膨胀子衰变引起的。这种再加热过程在某些情况下会复杂得多：衰变产物从振荡的充气和热环境中获得质量，因此传统的再加热方案可以修改。通过考虑热等离子体中膨胀粒子的耗散，我们详细地研究了膨胀粒子的产生过程、随后的热化以及膨胀粒子/等离子体系统的演化。结果表明，这些因素对再加热温度有很大影响。
The inflaton must convert its energy into radiation after inflation, which, in a conventional scenario, is caused by the perturbative inflaton decay. This reheating process would be much more complicated in some cases: the decay products obtain masses from an oscillating inflaton and thermal environment, and hence the conventional reheating scenario can be modified. We study in detail processes of particle production from the inflaton, their subsequent thermalization and evolution of inflaton/plasma system by taking dissipation of the inflaton in a hot plasma into account. It is shown that the reheating temperature is significantly affected by these effects.