最小超对称 U(1)_{B-L} 模型中相变产生的引力波
高能物理 - 唯象学
2020-04-22 v5
摘要
标准模型的许多扩展包含一个在远高于 TeV 尺度处自发破缺的新 U(1) 规范群。若 U(1) 破缺相变发生在 O(100)-O(1000) TeV 的成核温度,且在 β_n/H_n=1000 时,可在 O(10)-O(100) Hz 范围内产生随机引力波,从而被地面探测器探测到。同时,超对称(SUSY)可能在此类高尺度 U(1) 规范对称性破缺的动力学中起关键作用,因为为解决等级问题,SUSY 破缺尺度预期在 TeV 量级。本文中,我们研究 SUSY 极限下某 SUSY 模型中 U(1) 规范对称性破缺的相变。我们考虑一个具体例子,即最小 SUSY U(1)_{B-L} 模型。我们推导了该模型在 SUSY 极限下的有限温度有效势,研究了 U(1)_{B-L} 破缺相变,并估算了由此产生的引力波。
引用
@article{arxiv.1911.01292,
title = {Gravitational Waves from Phase Transition in Minimal SUSY $U(1)_{B-L}$ Model},
author = {Naoyuki Haba and Toshifumi Yamada},
journal= {arXiv preprint arXiv:1911.01292},
year = {2020}
}
备注
26 pages, 10 figures. Sensitivity curves of Advanced LIGO design, Cosmic Explorer and Einstein Telescope are overlaid on the plots of predicted gravitational wave spectrum. We have shown that the percolation of true-vacuum bubbles is completed in the benchmark with large supercooling where alpha_\theta(T_n)=1.5. References are added. Version accepted for publication in Physical Review D