Bounds on warm dark matter from Schwarzschild primordial black holes
Bounds on warm dark matter from Schwarzschild primordial black holes
复制标题
史瓦西原初黑洞的暖暗物质的界限
DOI：
--
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Giorgio Orlando
中科院分区：
文献类型：
--
作者：
J. Auffinger;I. Masina;Giorgio Orlando
我们认为轻暗物质候选者起源于施瓦西原始黑洞的蒸发，质量范围为10-5文档类[12pt]{Minimum}usepackage{amsath}usepackage{amssym}usepackage{amsfonts}usepackage{amssymb}usepackage{amsbsy}usepackage{mathsfs}usepackage{upgreek}setlong{oddsidemargin}{-69pt}egin{document}$$10^{-5}$$end{document}–109documentclass[12pt]{minimal}usepackage{amsmam}usepackage{amssymb}usepackage{amsbsy}usepackage{amsbsy}长度{oddsidemargin}{-69pt}这些是标准模型粒子之外的候选粒子，它们与其他粒子的耦合可以忽略所以它们只能通过引力相互作用。它们属于热暗物质的范畴，但破坏了结构的形成，对增加候选自旋的值有较小的影响。要求这样的候选者完全解释观测到的暗物质，我们发现对于直到2的自旋值，黑洞支配的情况都被排除了。对于辐射支配的情况，我们得到了参数βDocumentClass[12pt]{Minimum}usepackage{amsath}usepackage{wa ysym}usepackage{amsFonts}usepackage{amssymb}usepackage{amsbsy}usepackage{upgreek}setlong{oddsidemargin}{-69pt}例如{Document}$$Eta$End{Document}(原始黑洞形成时的能量密度高于辐射)的上限，候选者自旋越高，越不严格。
We consider light dark matter candidates originated from the evaporation of Schwarzschild primordial black holes, with masses in the range 10-5documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$10^{-5}$$end{document}–109documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$10^9$$end{document} g. These candidates are beyond standard model particles with negligible couplings to the other particles, so that they interact only gravitationally. Belonging to the category of warm dark matter, they nevertheless spoil structure formation, with a softer impact for increasing values of the candidate spin. Requiring such candidates to fully account for the observed dark matter, we find that the scenario of black hole domination is ruled out for all spin values up to 2. For the scenario of radiation domination, we derive upper limits on the parameter βdocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$eta $$end{document} (the primordial black hole energy density at formation over the radiation one), which are less stringent the higher the candidate spin is.