论文标题
用S2 Star Orbit测试Horndeski重力
Testing Horndeski gravity with S2 star orbit
论文作者
论文摘要
我们探索了一种全新的替代方法，以限制Horndeski重力理论的参数空间。使用其牛顿极限，可以在一个制度下测试该理论，鉴于其复杂性和预期效应的幅度很小，因此探测得很差。在牛顿一级，它产生了普遍的Yukawa样牛顿潜力，我们已经使用S2 Star Orbit数据进行了测试。我们的模型在一般相对论模型中添加了五个参数，分析将其中两个以前所未有的精度限制为这些能量尺度，而仅给出了其余参数的排除区域。我们已经表明了弱场测试的潜力来限制Horndeski重力开放的开口，事实上，这是一种新的途径，应该在未来附近进行更深入的探索。
We have explored a completely new and alternative way to restrict the parameter space of Horndeski theory of gravity. Using its Newtonian limit, it is possible to test the theory at a regime where, given its complexity and the small magnitude of the expected effects, it is poorly probed. At Newtonian level, it gives rise to a generalized Yukawa-like Newtonian potential which we have tested using S2 star orbit data. Our model adds five parameters to the General Relativity model, and the analysis constrains two of them with unprecedented precision to these energy scales, while only gives an exclusion region for the remaining parameters. We have shown the potential of weak-field tests to constrain Horndeski gravity opening, as a matter of fact, a new avenue that deserves to be further, and deeply, explored near in the future.
