论文标题
通过重力产生的大规模标量通过多渠道衰减在Kination时期重新加热
Reheating in the kination epoch via multi-channel decay of gravitationally created massive scalars
论文作者
论文摘要
我们提供了在Kination制度中重新加热的详细研究，在这种情况下，粒子含量是通过重力产生的大量标量腐烂到无质量标量和费米子最终将宇宙重新加热的情况下产生的。通过使用Boltzmann方程和使用弯曲时空中量子场理论的形式主义获得的衰减速率给出详细的计算。通过数值计算，发现加热温度在$ 10^{9} $ - $ 10^{13} $ GEV制度中。此外，当衰减粒子的质量$ m $很小，与单个标量衰减通道相比，衰减粒子的质量$ m $很小，衰减的费米子通道被发现是衰减的主要通道。
We provide a detailed study of reheating in the kination regime in a scenario where the particle content is produced by gravitational production of massive scalars decaying into massless scalars and fermions which eventually reheat the Universe. A detailed calculation is given by using Boltzmann equations and decay rates obtained using formalism of quantum field theory in curved spacetime. By numerical calculations the reheating temperature is found to be in the $10^{9}$-$10^{13}$ GeV regime. Moreover, the fermionic channel of decay is found to be the dominant channel of decay when the mass $m$ of the decaying particle is small raising the reheating temperature as opposed to a single scalar decay channel.
