论文标题
由宇宙背景辐射产生的引力波记忆
Gravitational wave memory produced by cosmic background radiation
论文作者
论文摘要
众所周知，能量通量会产生引力波记忆。在这项工作中研究了由宇宙微波背景（CMB），宇宙中微子背景（C $ν$ b）和引力波背景所产生的引力波记忆。我们构建了一种将重力波记忆强度与随机背景的能量通量相关的理论。我们发现所得的引力波记忆的行为作为不断变化的度量张量。这种不同的度量张量会将四极杆结构引入宇宙扩展。 CMB引起的重力波记忆太小而无法检测到。但是，由于C $ν$ B引起的重力波记忆和重力波背景是略少的。有趣的是，这种检测可用于估计中微子质量和重力波背景的特性。
It is well known that energy fluxes will produce gravitational wave memory. The gravitational wave memory produced by background including cosmic microwave background (CMB), cosmic neutrino background (C$ν$B), and gravitational wave background is investigated in this work. We construct a theory relating the gravitational wave memory strength to the energy flux of a stochastic background. We find that the resulted gravitational wave memory behaves as a constantly varying metric tensor. Such a varying metric tensor will introduce a quadrupole structure to the universe expansion. The gravitational wave memory due to the CMB is too small to be detected. But the gravitational wave memory due to the C$ν$B and the gravitational wave background is marginally detectable. Interestingly, such detection can be used to estimate the neutrino masses and the properties of the gravitational wave background.
