论文标题
通过重力波和大规模结构调查来限制标量调节的重力
Constraining Scalar-Tensor Modified Gravity with Gravitational Waves and Large Scale Structure Surveys
论文作者
论文摘要
第一个多通间的重力波事件对修饰的重力模型的空间产生了变化的影响。在本文中，我们研究了将来的一组重力波标准警笛事件的增强重力测试。我们对Horndeski标量量理论中的参数执行MCMC约束预测。特别是，我们关注重力波与来自星系调查的电磁大规模结构数据的互补性。我们发现，从高级LIGO网络中添加了五十个低红移（$ z \ Lesssim 0.2 $）标准警报器，仅提供了适度的改进（因子1.1-1.3，1.0没有改进）比现有的大规模结构的电磁观察结果相比。相比之下，来自未来丽莎卫星的高红移（最多$ z \ sim 10 $）标准警报器将改善Horndeski理论中普朗克质量的时间演变的限制，以$ \ sim 5 $。通过模拟不同的场景，我们发现这种改进可以在未知的合并倾斜角度和合并源总数的三个合理模型之间的变化方面进行边缘化。
The first multi-messenger gravitational wave event has had a transformative effect on the space of modified gravity models. In this paper we study the enhanced tests of gravity that are possible with a future set of gravitational wave standard siren events. We perform MCMC constraint forecasts for parameters in Horndeski scalar-tensor theories. In particular, we focus on the complementarity of gravitational waves with electromagnetic large-scale structure data from galaxy surveys. We find that the addition of fifty low redshift ($z \lesssim 0.2$) standard sirens from the advanced LIGO network offers only a modest improvement (a factor 1.1 -- 1.3, where 1.0 is no improvement) over existing constraints from electromagnetic observations of large-scale structures. In contrast, high redshift (up to $z \sim 10$) standard sirens from the future LISA satellite will improve constraints on the time evolution of the Planck mass in Horndeski theories by a factor $\sim 5$. By simulating different scenarios, we find this improvement to be robust to marginalisation over unknown merger inclination angles and to variation between three plausible models for the merger source population.
