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arXiv 2108.04823hep-phastro-ph.COgr-qchep-th
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充盈导致的深色QED

Dark QED from Inflation

Asimina Arvanitaki, Savas Dimopoulos, Marios Galanis, Davide Racco, Olivier Simon, Jedidiah O. Thompson

备注：
33+51 pages, 19 figures; v2: references added, expanded App. B
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摘要：

任何暗区丰富的一个贡献来自于暴胀期间的引力产生。如果暗区与暴胀子和标准模型弱耦合，这可能是它唯一的产生机制。对于非相互作用的暗扇区，如自由质量费米子或自由质量矢量场，这种机制已经被广泛研究。在本文中，我们表明，通过暗质量QED的例子，相互作用的存在可能会导致一个巨大不同的质量的暗物质（DM）粒子，这可能与即将到来的实验探测的范围相吻合。在暗量子电动力学的背景下，我们研究了暴胀后暗区能量密度的演化。暴胀产生了一个由大量玻色子组成的冷矢量凝聚体，通过有趣的过程--施温格对产生、强场电磁级联和等离子体动力学--将其能量转移到少量的“暗电子”，并引发暗区的热化。由此产生的暗电子DM质量范围是从50 MeV到30 TeV，与不存在暗电子的大质量光子暗物质的$10^{-5}$ eV质量和不存在暗光子的$10^9$ GeV暗电子质量都有很大不同。这可能会显着影响暗QED的搜索策略，更一般地说，与自相互作用DM部门的理论。在动力学混合的存在下，可以通过即将进行的直接检测实验（如SENSEI-100 g和OSCURA）来搜索这个质量范围内的暗电子。

英文摘要：

One contribution to any dark sector's abundance comes from its gravitational production during inflation. If the dark sector is weakly coupled to the inflaton and the Standard Model, this can be its only production mechanism. For non-interacting dark sectors, such as a free massive fermion or a free massive vector field, this mechanism has been studied extensively. In this paper we show, via the example of dark massive QED, that the presence of interactions can result in a vastly different mass for the dark matter (DM) particle, which may well coincide with the range probed by upcoming experiments. In the context of dark QED we study the evolution of the energy density in the dark sector after inflation. Inflation produces a cold vector condensate consisting of an enormous number of bosons, which via interesting processes - Schwinger pair production, strong field electromagnetic cascades, and plasma dynamics - transfers its energy to a small number of "dark electrons" and triggers thermalization of the dark sector. The resulting dark electron DM mass range is from 50 MeV to 30 TeV, far different from both the $10^{-5}$ eV mass of the massive photon dark matter in the absence of dark electrons, and from the $10^9$ GeV dark electron mass in the absence of dark photons. This can significantly impact the search strategies for dark QED and, more generally, theories with a self-interacting DM sector. In the presence of kinetic mixing, a dark electron in this mass range can be searched for with upcoming direct detection experiments, such as SENSEI-100g and OSCURA.

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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