标题： $\textit{奇怪四重奏的扭曲回声}$：标量诱导的引力波作为原初宇称破坏的探针 显示英文标题

标题： $\textit{Twisted echoes of an odd quartet}$: Scalar-induced gravitational waves as a probe of primordial parity-violation

摘要： 宇称破坏在许多宇宙学可观测量中留下明显的痕迹。 我们展示了宇称奇的原初标量四点相关函数，尽管其强度适中，但会赋予标量诱导的引力波（SIGW）可检测的不对称性。 这使我们能够对四点相关函数的宇称奇部分施加强约束。 在某些尺度上，我们发现SIGW直接量化原初非高斯性中的宇称破坏，不受高斯贡献的掩盖。 我们的结果要求将SIGW和宇称奇四点相关函数视为宇称破坏理论的互补预测。 显示英文摘要

摘要： Parity-violation leaves tell-tale trails in many cosmological observables. We illustrate parity-odd primordial scalar trispectra, that despite being of modest strength, impart detectable chirality to scalar-induced gravitational waves (SIGW). This allows us to impose strong bounds on the parity-odd part of trispectrum. Over certain scales, we find SIGW directly quantify parity-violation in primordial non-Gaussianity, unobscured by the Gaussian contribution. Our results call for treatment of SIGW and parity-odd trispectrum as complementary predictions of parity-violating theories.