AI 中文总结
研究利用第三代引力波探测器通过标量诱导引力波探测原初非高斯性和宇称对称性，开发框架考虑相关贡献并进行参数推断，表明未来干涉仪能约束相关谱及参数，即便有天体物理前景也可有效约束。
AI 中文摘要
在这项工作中，我们研究了利用第三代引力波探测器通过标量诱导引力波（SIGWs）探测原初非高斯性和相关宇称对称性的前景。我们开发了一个框架，该框架考虑了由双谱和三谱量化的标量非高斯性对引力波能量密度谱的贡献，并使用爱因斯坦望远镜和宇宙探测器的模拟数据进行参数推断。标量三谱的宇称奇分量在随机引力波背景（SGWB）中诱导圆极化，为原初宇宙中的宇称破缺提供了直接探测。我们表明，未来的干涉仪可以对标量三谱的宇称奇分量以及双谱和宇称偶三谱施加有竞争力的约束。此外，我们还考虑了天体物理贡献，它可能作为SIGWs的前景。我们表明，尽管添加了这样的前景，我们仍然能够有效地约束与SIGWs相关的宇宙学参数以及天体物理参数。
英文摘要
In this work, we investigate the prospects for probing primordial non-Gaussianity and associated symmetry of parity through scalar-induced gravitational waves (SIGWs), with third-generation gravitational-wave detectors. We develop a framework that accounts for contributions to the energy density spectrum of GWs arising from the scalar non-Gaussianity quantified by bispectrum and trispectrum, and perform parameter inference using simulated data from Einstein Telescope and Cosmic Explorer. The parity-odd component of the scalar trispectrum induces circular polarization in the stochastic gravitational-wave background (SGWB), providing a direct probe of parity-violation in the primordial Universe. We show that future interferometers can place competitive constraints on the parity-odd scalar trispectrum, along with the bispectrum and parity-even trispectrum. Moreover, we include the astrophysical contribution, which could act as a foreground for the SIGWs. We show that, despite the addition of such a foreground, we are still able to effectively constrain the cosmological parameters related to SIGWs and the astrophysical parameters as well.
Comments13 pages, 5 figures, 2 Appendices
