各向同性随机引力波背景中对频率依赖圆极化的敏感性
Sensitivity to a Frequency-Dependent Circular Polarization in an Isotropic Stochastic Gravitational Wave Background
摘要：
我们计算的灵敏度圆偏振的各向同性随机引力波背景（ISGWB）作为频率的函数的地面和空间为基础的干涉仪和观测的宇宙微波背景。圆偏振ISGWB的起源可能是由于奇异的原始物理学（即，早期宇宙中的宇称破坏），并且可能是强烈的频率依赖性。我们目前的计算在一个连贯的框架内，澄清了圆偏振的敏感性的基本要求，在区别于以前的工作，分别集中在这些技术。我们发现，在南半球增加一个具有爱因斯坦望远镜灵敏度的干涉仪，可以提高地基网络对圆偏振的灵敏度约为2倍。本文给出的灵敏度曲线表明，当前和计划观测（$10^{-18}\ {\rm Hz} \lesssim f \lesssim 100\ {\rm Hz}$）的频率范围很宽，这对于确定ISGWB中任何圆偏振阳性探测的物理基础至关重要。我们还确定了一个沙漠之间的频率$10^{-15}\ {\rm Hz} \lesssim f \lesssim 10^{-3}\ {\rm Hz}$的圆偏振灵敏度，脉冲星定时阵列和间接检测方法无法区分的引力波极化。
英文摘要：
We calculate the sensitivity to a circular polarization of an isotropic stochastic gravitational wave background (ISGWB) as a function of frequency for ground- and space-based interferometers and observations of the cosmic microwave background. The origin of a circularly polarized ISGWB may be due to exotic primordial physics (i.e., parity violation in the early universe) and may be strongly frequency dependent. We present calculations within a coherent framework which clarifies the basic requirements for sensitivity to circular polarization, in distinction from previous work which focused on each of these techniques separately. We find that the addition of an interferometer with the sensitivity of the Einstein Telescope in the southern hemisphere improves the sensitivity of the ground-based network to circular polarization by about a factor of two. The sensitivity curves presented in this paper make clear that the wide range in frequencies of current and planned observations ($10^{-18}\ {\rm Hz} \lesssim f \lesssim 100\ {\rm Hz}$) will be critical to determining the physics that underlies any positive detection of circular polarization in the ISGWB. We also identify a desert in circular polarization sensitivity for frequencies between $10^{-15}\ {\rm Hz} \lesssim f \lesssim 10^{-3}\ {\rm Hz}$, given the inability for pulsar timing arrays and indirect-detection methods to distinguish the gravitational wave polarization.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
