Filtered pseudo-scalar dark matter and gravitational waves from first order phase transition

Filtered pseudo-scalar dark matter and gravitational waves from first order phase transition
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从一阶相变中过滤伪标量暗物质和引力波

DOI:
10.1088/1475-7516/2021/06/038
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发表时间:
2020-12
影响因子:
6.4
通讯作者:
Lei Wang
Lei Wang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Wei Chao;xiu fei Li;Lei Wang

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如果暗物质(DM)在一阶相变过程中获得质量,那么当暗物质进入膨胀的气泡时,会产生滤除效应。本文研究了伪标量DM的滤除效应,该伪标量DM的质量可能部分来自于隐藏扇区中的一阶相变。我们计算的比率DM可能进入泡沫为各种泡沫壁速度以及各种状态的DM(热平衡,或热平衡)的相变,导致小普及率可能影响DM的最后遗物丰富,我们进一步研究随机发出的引力波信号隐藏部门相变在天基干涉仪实验的确凿的这个模型。
If dark matter (DM) acquires mass during a first order phase transition, there will be a filtering-out effect when DM enters the expanding bubble. In this paper we study the filtering-out effect for a pseudo-scalar DM, whose mass may partially come from a first order phase transition in the hidden sector. We calculate the ratio of DM that may enter the bubble for various bubble wall velocities as well as various status of DM (in the thermal equilibrium, or out of the thermal equilibrium) at the time of phase transition, which results in small penetration rate that may affect the final relic abundance of the DM. We further study the stochastic gravitational wave signals emitted by the hidden sector phase transition at the space-based interferometer experiments as the smoking-gun of this model.
DOI: --
发表时间: 2015-02
期刊: arXiv: High Energy Physics - Phenomenology
影响因子: --
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期刊: JHEP
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