发表机构
The University of Tokyo; The University of Chicago; Korea Advanced Institute of Science and Technology (KAIST); The University of Tokyo Institutes for Advanced Study, The University of Tokyo（东京大学; 芝加哥大学; 韩国科学技术院; 东京大学国际高等研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究红外有限宇宙弦（如Skyrmion线和半局部弦）的引力波信号，指出其NGB发射受抑制，信号可与局部弦相比。
AI 中文摘要
Skyrmion线和半局部弦是红外有限宇宙弦的实例，它们出现在具有自发破缺全局对称性的理论中。与全局$U(1)$弦不同，它们不支持长程南部-戈德斯通玻色子（NGB）轮廓，该轮廓负责对数红外发散的弦张力。我们认为，从它们的低频振荡中发出的NGB受到强烈抑制。因此，它们的引力波信号可能与局部弦的信号相当。
英文摘要
Skyrmion lines and semi-local strings are examples of infrared-finite cosmic strings that arise in theories with spontaneously broken global symmetries. Unlike global $U(1)$ strings, they do not support the long-range Nambu-Goldstone boson (NGB) profile responsible for a logarithmically infrared-divergent string tension. We argue that NGB emission from their low-frequency oscillations is strongly suppressed. Consequently, their gravitational-wave signals may be comparable to those from local strings.
Comments5 pages + appendix
