Gravitational waves from first-order phase transitions: LIGO as a window to unexplored seesaw scales
Gravitational waves from first-order phase transitions: LIGO as a window to unexplored seesaw scales
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DOI：
10.1088/1475-7516/2019/02/021
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发表时间：
2018-10
影响因子：
6.4
通讯作者：
V. Brdar;Alexander J. Helmboldt;Jisuke Kubo
中科院分区：
文献类型：
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作者：
V. Brdar;Alexander J. Helmboldt;Jisuke Kubo
在最近提出的经典共形模型，其中中微子质量的产生与自发尺度对称性破缺有关，我们研究了相关的相变，发现它是强的一阶过冷量。仔细考虑到真空能量的亚稳定的最小值，我们证明了模型的参数空间的一个显着的部分可以被排除，仅仅是因为相变不能完成。我们认为，这是一个强大的一致性检查适用于一般理论的基础上经典标度不变性。最后，我们表明，所有剩余的参数点预测一个相当大的引力波信号，使该模型可以充分测试未来的引力波观测站。特别是，大部分参数空间已经可以通过即将于2019年初开始的LIGO科学运行进行探测。
Within a recently proposed classically conformal model, in which the generation of neutrino masses is linked to spontaneous scale symmetry breaking, we investigate the associated phase transition and find it to be of strong first order with a substantial amount of supercooling. Carefully taking into account the vacuum energy of the meta-stable minimum, we demonstrate that a significant fraction of the model's parameter space can be excluded simply because the phase transition cannot complete. We argue this to be a powerful consistency check applicable to general theories based on classical scale invariance. Finally, we show that all remaining parameter points predict a sizable gravitational wave signal, so that the model can be fully tested by future gravitational wave observatories. In particular, most of the parameter space can already be probed by the upcoming LIGO science run starting in early 2019.