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arXiv 1801.03059hep-phgr-qc
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通过再加热连接CMB各向异性和冷暗物质现象学

Connecting CMB anisotropy and cold dark matter phenomenology via reheating

Debaprasad Maity, Pankaj Saha

摘要:

对暗物质性质的理解是粒子唯象学现象学最具挑战性的问题之一。在本文中,我们试图理解的现象学的暗物质在光的宇宙微波背景(CMB)各向异性非常了解的性质。为了将这两者联系起来,通货膨胀及其随后的演变(称为再加热阶段)起着重要作用。根据前面的分析,我们首先建立了一个一对一的对应关系的CMB功率谱和再加热温度假设微扰再加热的情况下。进一步通过引入一个可能的暗物质候选者和当前的暗物质丰度值,我们通过不同暴胀模型的暴胀功率谱来约束暗物质参数空间。

英文摘要:

Understanding the properties of dark matter has proved to be one of the most challenging problems of particle phenomenology. In this paper, we have tried to understand the phenomenology of dark matter in light of very well understood properties of cosmic microwave background (CMB) anisotropy. To connect these two, inflation and its subsequent evolution known as the reheating phase play the important role. Following the previous analysis, we first established a one-to-one correspondence between the CMB power spectrum and the reheating temperature assuming the perturbative reheating scenario. Further by incorporating a possible dark matter candidate through the radiation annihilation process during reheating and the current value of dark matter abundance, we constrain the dark matter parameter space through the inflationary power spectrum for different inflationary models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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