标题： Fabry-Perot 腔在空间引力波天线 DECIGO 中的重要性 显示英文标题

标题： Significance of Fabry-Perot cavities for space gravitational wave antenna DECIGO

摘要： 未来日本在太空中探测引力波的项目计划为DECIGO。 为了实现各种科学任务，包括以通过探测原初引力波验证宇宙暴胀为主要目标，DECIGO被设计为在从$0.1$到$1$赫兹的频段内具有高灵敏度，臂长为1000公里。 此外，这些臂中使用法布里-珀罗腔已被确立为DECIGO项目的一部分。 在本文中，我们仔细研究了法布里-珀罗腔对于推动该项目的重要性，重点在于观测来自宇宙暴胀和双致密星系统引力波的可能性。 结果表明，使用法布里-珀罗腔对于探测这些引力波极为有益，并有望开启引力波天文学的新窗口。 显示英文摘要

摘要： The future Japanese project for the detection of gravitational waves in space is planned as DECIGO. To achieve various scientific missions, including the verification of cosmic inflation through the detection of primordial gravitational waves as the main objective, DECIGO is designed to have high sensitivity in the frequency band from $0.1$ to $1$ Hz, with arms of length 1000 km. Furthermore, the use of the Fabry-Perot cavity in these arms has been established for the DECIGO project. In this paper, we scrutinize the significance of the Fabry-Perot cavity for promoting this project, with a focus on the possibility of observing gravitational waves from cosmic inflation and binary compact star systems as indicators. The results show that using the Fabry-Perot cavity is extremely beneficial for detecting them, and it is anticipated to enable the opening of a new window in gravitational wave astronomy.