当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run
Physical Review Letters ( IF 8.6 ) Pub Date : 2021-06-16 , DOI: 10.1103/physrevlett.126.241102
R. Abbottet al.(LIGO Scientific Collaboration, Virgo Collaboration, KAGRA Collaboration)

We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 dataset. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks, and, for the first time, kink-kink collisions. A template-based search for short-duration transient signals does not yield a detection. We also use the stochastic gravitational-wave background energy density upper limits derived from the O3 data to constrain the cosmic string tension Gμ as a function of the number of kinks, or the number of cusps, for two cosmic string loop distribution models. Additionally, we develop and test a third model that interpolates between these two models. Our results improve upon the previous LIGO–Virgo constraints on Gμ by 1 to 2 orders of magnitude depending on the model that is tested. In particular, for the one-loop distribution model, we set the most competitive constraints to date: Gμ4×1015. In the case of cosmic strings formed at the end of inflation in the context of grand unified theories, these results challenge simple inflationary models.

中文翻译:

使用来自第三次高级 LIGO-Virgo 观测运行的数据对宇宙弦的约束

我们在 Advanced LIGO 和 Virgo full O3 数据集中搜索由宇宙弦产生的引力波信号。搜索结果显示了由宇宙弦环特征产生的引力波,例如尖点、扭结以及首次扭结碰撞。对短期瞬态信号的基于模板的搜索不会产生检测。我们还使用从 O3 数据导出的随机引力波背景能量密度上限来约束宇宙弦张力Gμ对于两个宇宙弦环分布模型,作为扭结数或尖点数的函数。此外,我们开发并测试了在这两个模型之间进行插值的第三个模型。我们的结果改进了之前的 LIGO-Virgo 约束Gμ根据所测试的模型,降低 1 到 2 个数量级。特别是,对于单环分布模型,我们设置了迄今为止最具竞争力的约束条件:Gμ4×10-15. 在大统一理论的背景下,在暴胀结束时形成的宇宙弦的情况下,这些结果挑战了简单的暴胀模型。
更新日期:2021-06-16
down
wechat
bug