论文标题
暗物质颗粒生产率的宇宙学限制
Cosmological constraints on dark matter particle production rate
论文作者
论文摘要
在存在宇宙常数的情况下，使用爱因斯坦的重力场方程研究了引力颗粒的产生。为了研究粒子创造的机理，宇宙被认为是热力学系统，并且已经采用了非平衡热力学。为了估计具有观测数据的宇宙学参数，包括SNE IA，BAO，Planck 2015和HST，我们为创建粒子的速率选择了一种现象学方法。获得了非零的粒子生产率，这意味着颗粒产生的可能性与最近的宇宙学观察结果一致。在1个Sigma置信区间中，γ/3H0的比率为0.0835。
Gravitational particle production has been investigated by using Einstein's gravitational field equations in the presence of a cosmological constant. To study the mechanism of particle creation, the Universe has been considered as a thermodynamics system and non-equilibrium thermodynamics has been employed. In order to estimate the cosmological parameters with observational data, including SNe Ia, BAO, Planck 2015 and HST, we have chosen a phenomenological approach for the rate of particle creation. A non-zero particle production rate was obtained implying that the possibility of the particle production is consistent with recent cosmological observations. In the 1 sigma confidence interval, the ratio of Gamma/3H0 was obtained to be 0.0835.
