Relic Density of Asymmetric Dark Matter in Modified Cosmological Scenarios

被引：7

作者：

Iminniyaz, Hoernisa ^{[1
]}

Salai, Burhan ^{[1
]}

Lv, Guo-Liang ^{[1
]}

机构：

[1] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2018年 / 70卷 / 05期

基金：

中国国家自然科学基金;

关键词：

asymmetric dark matter; modified cosmological scenarios; relic density; ABUNDANCE;

D O I：

10.1088/0253-6102/70/5/602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the relic abundance of asymmetric Dark Matter particles in modified cosmological scenarios where the Hubble rate is changed with respect to the standard cosmological scenario. The modified Hubble rate leaves its imprint on the relic abundance of asymmetric Dark Matter particles if the asymmetric Dark Matter particles freeze{out in this era. For generality we parameterize the modification of the Hubble rate and then calculate the relic abundance of asymmetric Dark Matter particles and anti-particles. We find the abundances for the Dark Matter particles and anti{particles are enhanced in the modified cosmological models. The indirect detection signal is possible for the asymmetric Dark Matter particles due to the increased annihilation rate in the modified cosmological models. Applying Planck data, we find the constraints on the parameters of the modified cosmological models.

引用

页码：602 / 608

页数：7

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