论文标题
多通用器宇宙学：关联CMB和SGWB测量值
Multimessenger Cosmology: correlating CMB and SGWB measurements
论文作者
论文摘要
表征随机重力波背景（SGWB）的物理特性是识别其可能起源本质的关键步骤。我们将分析集中在SGWB各向异性上。可以从长波长标量模式对引力波功率谱：各向异性的贡献中推断出挤压构型中的非平凡原始标量张量（STT）相关性的存在。至关重要的是，这种贡献与宇宙微波背景（CMB）中的温度各向异性相关。我们表明，对于产生适当大型STT非高斯的通货膨胀模型，将CMB与引力波的随机背景交叉相关是对早期宇宙物理学的非常有效的探测。所得信号可以是原始SGWB各向异性的吸烟枪。
Characterizing the physical properties of the stochastic gravitational waves background (SGWB) is a key step towards identifying the nature of its possible origin. We focus our analysis on SGWB anisotropies. The existence of a non-trivial primordial scalar-tensor-tensor (STT) correlation in the squeezed configuration may be inferred from the effect that a long wavelength scalar mode has on the gravitational wave power spectrum: an anisotropic contribution. Crucially, such contribution is correlated with temperature anisotropies in the cosmic microwave background (CMB). We show that, for inflationary models that generate suitably large STT non-Gaussianities, cross-correlating the CMB with the stochastic background of gravitational waves is a very effective probe of early universe physics. The resulting signal can be a smoking-gun for primordial SGWB anisotropies.
