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arXiv 0911.3592astro-ph.COastro-ph.GAhep-ph
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镜像暗物质的早期宇宙学

Early Universe cosmology with mirror dark matter

Paolo Ciarcelluti

摘要:

镜像物质是一种稳定的自碰撞暗物质候选者。如果精确镜像宇称是自然界的守恒对称,那么宇宙中可能存在一个平行的隐藏(镜像)扇区,它具有与我们(可见)扇区相同的粒子和相同的物理定律。这两个扇区主要通过引力相互作用,因此镜像物质自然是“暗”的。本文简要回顾了镜像暗物质的宇宙学特征,如大爆炸核合成、原初结构的形成和演化、宇宙微波背景和大尺度结构功率谱,以及它与DAMA年度调制信号的光子-镜像-光子动力学混合解释的兼容性。总结目前的研究现状,并将理论结果与观测/实验进行比较,可以看出镜像物质不仅是一种可行的,而且是一种有前途的暗物质候选者。

英文摘要:

Mirror matter is a stable self-collisional dark matter candidate. If exact mirror parity is a conserved symmetry of nature, there could exist a parallel hidden (mirror) sector of the Universe which has the same kind of particles and the same physical laws of our (visible) sector. The two sectors interact each other predominantly via gravity, therefore mirror matter is naturally "dark". Here I briefly review the cosmological signatures of mirror dark matter, as Big Bang nucleosynthesis, primordial structure formation and evolution, cosmic microwave background and large scale structure power spectra, together with its compatibility with the interpretation of the DAMA annual modulation signal in terms of photon--mirror-photon kinetic mixing. Summarizing the present status of research and comparing theoretical results with observations/experiments, it emerges that mirror matter is not just a viable, but a promising dark matter candidate.

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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