Analytic expressions for the kinetic decoupling of WIMPs

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Visinelli, Luca^1

Department of Physics and Astronomy, University of Bologna, Via Zamboni, 33, Bologna

40126, Italy^1

关键词: Analytic expressions;    Cosmological modeling;    General expression;    Low temperatures;    Power-law dependences;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/4/042059/pdf
DOI  :  10.1088/1742-6596/718/4/042059

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We present a general expression for the values of the average kinetic energy and of the temperature of kinetic decoupling of a WIMP, valid for any cosmological model. We show an example of the usage of our solution when the Hubble rate has a power-law dependence on temperature, and we show results for the specific cases of kination cosmology and low-temperature reheating cosmology.