论文标题
重新加热和暗物质冻结在Higgs- $ r^2 $通货膨胀模型中
Reheating and Dark Matter Freeze-in in the Higgs-$R^2$ Inflation Model
论文作者
论文摘要
我们研究了Higgs-$ r^2 $通货膨胀模型中的通货膨胀动力学，以重新加热和冻结暗物质。采用重新加热的扰动方法，我们确定在加热过程中产生的辐射浴温度的演变，并确定宇宙的最高温度和加热温度。我们采用单线标量暗物质，具有共形非最小耦合和消失的希格斯 - 门户耦合，我们讨论了从重新加热期间的非热散射和重新加热后的热散射的暗物质产生。我们发现，由于温度高的温度，热散射在模型中的主要产生是主要的。我们模型中的重新加热温度主要由Higgs冷凝物确定为$ 10^{14} \，{\ rm Gev} $，而深色物质则具有约$ 10^9 \，{\ rm gev} $，可以用正确的重新密度产生。
We study the post-inflationary dynamics for reheating and freeze-in dark matter in the Higgs-$R^2$ inflation model. Taking the perturbative approach for reheating, we determine the evolution of the temperature for radiation bath produced during reheating and determine the maximum and reheating temperatures of the Universe. Adopting a singlet scalar dark matter with a conformal non-minimal coupling and a vanishing Higgs-portal coupling, we discuss the freeze-in production of dark matter both from the non-thermal scattering during reheating and the thermal scattering after reheating. We find that thermal scattering is dominant for dark matter production in our model due to the high reheating temperature. The reheating temperature in our model is determined dominantly by the Higgs condensate to be up to about $10^{14}\,{\rm GeV}$ and dark matter with masses up to about $10^9\,{\rm GeV}$ can be produced with a correct relic density.
