论文标题

带有爱因斯坦望远镜的宇宙学:无滑力重力模型和红移规格

Cosmology with the Einstein Telescope: No Slip Gravity Model and Redshift Specifications

论文作者

Mitra, Ayan, Mifsud, Jurgen, Mota, David F., Parkinson, David

论文摘要

爱因斯坦望远镜和其他第三代干涉探测器的重力波被预计为$ 2030 $。引力波的宇宙学特征无疑会揭示与当前重力框架的任何偏离。我们在这里与特定的修饰重力模型,NO滑动重力模型,并具有对重力波的预测观察。我们比较了状态参数的暗能量方程$ W_0^{} -W_A^{} $,在修饰的重力模型和Einstein Gravity之间。我们表明,无滑力重力模型与标准重力理论的约束密切模仿,并且宇宙学的约束非常相似。光谱红移的使用,尤其是在低 - 红移方案中,可以显着改善推断参数约束。我们测试了这种前瞻性引力数据集在测试此类模型方面的功能,并发现修饰的重力模型参数与确定距离的宇宙学参数之间存在显着的变性。

The Einstein Telescope and other third generation interferometric detectors of gravitational waves are projected to be operational post $2030$. The cosmological signatures of gravitational waves would undoubtedly shed light on any departure from the current gravitational framework. We here confront a specific modified gravity model, the No Slip Gravity model, with forecast observations of gravitational waves. We compare the predicted constraints on the dark energy equation of state parameters $w_0^{}-w_a^{}$, between the modified gravity model and that of Einstein gravity. We show that the No Slip Gravity model mimics closely the constraints from the standard gravitational theory, and that the cosmological constraints are very similar. The use of spectroscopic redshifts, especially in the low--redshift regime, lead to significant improvements in the inferred parameter constraints. We test how well such a prospective gravitational wave dataset would function at testing such models, and find that there are significant degeneracies between the modified gravity model parameters, and the cosmological parameters that determine the distance, due to the gravitational wave dimming effect of the modified theory.

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