论文标题
在天体物理重力波背景中搜索修饰的重力：应用于地面干涉仪
Searching for modified gravity in the astrophysical gravitational wave background: Application to ground-based interferometers
论文作者
论文摘要
我们研究了在考虑霍尼德斯基重力类型的一般相对性的理论时，如何在宇宙学的体积上修改天体物理引力波背景（AGWB）的传播。我们首先推断出对Planck质量可能存在可能运行的AGWB的振幅校正。然后，我们将光谱噪声密度应用于某些地面干涉仪的光谱噪声密度，即，晚期Ligo（Aligo），Einstein望远镜（ET）和Cosmic Explore（CE），以评估两个不同场景的宽度质量的信号 - 噪声比率（SNR），以评估planck质量的幅度的函数。我们发现，在观察期间，$ \ gtrsim $ 5年和$ \ gtrsim $ 1年，我们可以分别从ET和CE敏感性中频段[1-100] Hz中具有明显的AGWB信号。使用Fisher信息，我们找到了一些预测范围，并分别从ET和CE的Planck Mass的运行幅度分别推断出$ \ Lessim $ 27 \％和$ \ Lessim $ 18 \％校正。显然，将来对AGWB的检测可以打开一个新窗口，以良好的准确性探测重力的性质。
We investigate how the propagation of an astrophysical gravitational wave background (AGWB) is modified over cosmological volumes when considering theories beyond general relativity of the type Horndeski gravity. We first deduce an amplitude correction on the AGWB induced for the presence of a possible running in the Planck mass. Then, we apply the spectral noise density from some ground-based interferometers, namely, the Advanced LIGO (aLIGO), Einstein Telescope (ET) and Cosmic Explore (CE), to evaluate the signal-to-noise ratio (SNR) as a function of the amplitude of the running of the Planck mass for two different scenarios. We find that for observation time period $\gtrsim$ 5 yrs and $\gtrsim$ 1 yr, we can have a significant signal of the AGWB in the band [1-100] Hz from the ET and CE sensitivity, respectively. Using Fisher information, we find some forecast bounds, and we deduce $\lesssim$ 27\% and $\lesssim$ 18\% correction at 1$σ$ confidence level on the amplitude of the running of the Planck mass from ET and CE, respectively. It is clear that a detection of a AGWB in future can open a new window to probe the nature of gravity with good accuracy.
