Gravitational Waves from Hidden QCD Phase Transition

Gravitational Waves from Hidden QCD Phase Transition
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DOI:
10.1103/physrevd.96.075045
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发表时间:
2017-09
期刊:
影响因子:
5
通讯作者:
M. Aoki;Hiromitsu Goto;J. Kubo
M. Aoki;Hiromitsu Goto;J. Kubo
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
M. Aoki;Hiromitsu Goto;J. Kubo

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早期宇宙的剧烈变化,例如一级相变,可以产生随机引力波(GW)背景。我们使用强相互作用的类 QCD 隐藏扇区中的手性相变产生的 GW 背景来研究标准模型 (SM) 的尺度不变扩展的可测试性,该隐藏扇区通过 SM 单线态实标量介体触发电弱相变。在平均场近似中使用 Nambu-Jona-Lasinio 方法,我们估计了 GW 信号,并发现它可以由未来的基于空间的探测器进行测试。
Drastic changes in the early universe such as first-order phase transition can produce a stochastic gravitational wave (GW) background. We investigate the testability of a scale invariant extension of the standard model (SM) using the GW background produced by the chiral phase transition in a strongly interacting QCD-like hidden sector, which, via a SM singlet real scalar mediator, triggers the electroweak phase transition. Using the Nambu--Jona-Lasinio method in a mean field approximation we estimate the GW signal and find that it can be tested by future space based detectors.