Gravitational waves from cosmic strings associated with pseudo-Nambu-Goldstone dark matter

作     者：邱泽宇 余钊焕 Ze-Yu Qiu;Zhao-Huan Yu

作者机构：School of PhysicsSun Yat-Sen UniversityGuangzhou 510275China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2023年第47卷第8期

页      面：149-161页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：Supported by the National Natural Science Foundation of China(11805288) 

主　　题：dark matter gravitational waves cosmic strings beyond the standard model 

摘      要：We study stochastic gravitational waves from cosmic strings generated in an ultraviolet-complete model for pseudo-Nambu-Goldstone dark matter with a hidden U(1)gauge *** dark matter candidate in this model can naturally evade direct detection bounds and easily satisfy other phenomenological *** bound on the dark matter lifetime implies an ultraviolet scale higher than 10^(9)*** spontaneous U(1)symmetry breaking at such a high scale would induce cosmic strings with high tension,resulting in a stochastic gravitational wave background with a high energy *** investigate the constraints from current gravitational wave experiments as well as the future *** find that most viable parameter points can be well studied in future gravitational waveexperiments.