论文标题
重力波背景的相位分解
Phase decoherence of gravitational wave backgrounds
论文作者
论文摘要
度量扰动会影响引力波通过不均匀宇宙传播时。这种效果导致随机重力波背景（SGWB）失去在发射或地平线进入时可能存在的任何相位相干性。我们表明，对于标准的宇宙学模型，这意味着在频率上方的连贯性完全损失$ f \ sim 10^{ - 12} $ hz。结果是，使用相位相关方法映射SGWB的任何尝试都没有可预见的应用程序。直接解决SGWBS强度的不一致方法是可以重建任何SGWB的角度依赖性的唯一方法。
Metric perturbations affect the phase of gravitational waves as they propagate through the inhomogeneous universe. This effect causes Stochastic Gravitational Wave Backgrounds (SGWBs) to lose any phase coherence that may have been present at emission or horizon entry. We show that, for a standard cosmological model, this implies complete loss of coherence above frequencies $f \sim 10^{-12}$ Hz. The result is that any attempts to map SGWBs using phase-coherent methods have no foreseeable applications. Incoherent methods that solve directly for the intensity of the SGWBs are the only methods that can reconstruct the angular dependence of any SGWB.
