arXiv 2407.057522024-07hep-phastro-ph.CO

Dark Big Bang（暗大爆炸）的暗区隧穿场势

Dark Sector Tunneling Field Potentials for a Dark Big Bang

Richard Casey, Cosmin Ilie

备注：: Version accepted for publication; some typos corrected

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AI总结：

针对暗物质直接探测实验中WIMPs参数空间逼近中微子本底的现状，本研究围绕与可见区强退耦的暗区模型，确定了能实现Dark Big Bang且符合所有实验限制的隧穿势参数空间允许区域。

摘要：

迄今为止所有观测到的暗物质的重要证据都来自其引力相互作用。经过40年的直接探测实验，作为暗物质候选者的弱相互作用大质量粒子（WIMPs）的参数空间正迅速逼近中微子本底。鉴于此，我们研究了一个与可见区强退耦、仅通过引力相互作用的暗区。在Freese和Winkler（arXiv:2302.11579）提出的该模型中，暗物质可通过暗区的一阶相变（被称为Dark Big Bang）产生。本研究中，我们完全确定了能实现Dark Big Bang且与所有现有实验限制一致的隧穿势参数空间的允许区域。

英文摘要：

All of the significant evidence for dark matter observed thus far has been through its gravitational interactions. After 40 years of direct detection experiments, the parameter space for Weakly Interacting Massive Particles (WIMPs) as dark matter candidates is rapidly approaching the neutrino floor. In this light, we consider a dark sector that is strongly decoupled from the visible sector, interacting exclusively through gravity. In this model, proposed by Freese and Winkler (arXiv:2302.11579), dark matter can be produced through a first-order phase transition in the dark sector dubbed the Dark Big Bang. In this study we fully determine the allowed region of parameter space for the tunneling potential that leads to the realization of a Dark Big Bang and is consistent with all experimental bounds available.

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