Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments
Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments
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引力波直接探测实验对宇宙弦参数的预测约束
DOI：
10.1103/physrevd.86.023503
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发表时间：
2012
影响因子：
5
通讯作者：
Joseph Silk
中科院分区：
文献类型：
--
作者：
黒柳幸子;宮本幸一;関口豊和;高橋慶太郎;Joseph Silk
引力波（GWs）是宇宙弦的关键特征之一。如果在未来的实验中检测到来自宇宙弦的GWs，不仅可以证实它们的存在，而且可以探索它们的性质。在本文中，我们研究的宇宙弦参数的测定，通过直接检测的GW签名在未来的地基GW实验。我们考虑两种类型的GW，爆发和随机GW背景，这为我们提供了不同的信息宇宙弦属性。通过对宇宙弦参数（如控制弦张力、初始环大小和重联概率的参数）进行Fisher矩阵计算，我们发现两种不同类型的引力波可以打破其中一些参数的简并，并提供比每种测量更好的约束.
Gravitational waves (GWs) are one of the key signatures of cosmic strings. If GWs from cosmic strings are detected in future experiments, not only their existence can be confirmed, but also their properties might be probed. In this paper, we study the determination of cosmic string parameters through direct detection of GW signatures in future ground-based GW experiments. We consider two types of GWs, bursts and the stochastic GW background, which provide us with different information about cosmic string properties. Performing the Fisher matrix calculation on the cosmic string parameters, such as parameters governing the string tensionand initial loop sizeand the reconnection probability, we find that the two different types of GWs can break degeneracies in some of these parameters and provide better constraints than those from each measurement.