Polarization modes of gravitational waves in quadratic gravity
Polarization modes of gravitational waves in quadratic gravity
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DOI：
10.1103/physrevd.100.124007
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发表时间：
2019-10
影响因子：
5
通讯作者：
Pratik Wagle;A. Saffer;N. Yunes
中科院分区：
文献类型：
--
作者：
Pratik Wagle;A. Saffer;N. Yunes
LIGO-Virgo合作对紧致双星的启发和合并的观察，为爱因斯坦在极端引力状态下的理论提供了新的测试，在极端引力状态下，引力相互作用同时是强的、非线性的和动态的。爱因斯坦理论之外的理论也可以通过探测引力波的偏振模式而受到约束。在本文中，我们证明了动力学的陈-西蒙斯和爱因斯坦-膨胀-高斯-邦尼引力不能仅根据偏振模式的检测从广义相对论中区分出来。为了证明这一结果，我们使用Newman-Penrose方法和不可约分解方法发现在这两种理论中都只能检测到张量模态。
The observation of the inspiral and merger of compact binaries by the LIGO-Virgo collaboration has allowed for new tests of Einstein's theory in the extreme gravity regime, where gravitational interactions are simultaneously strong, non-linear, and dynamical. Theories beyond Einstein's can also be constrained by detecting the polarization modes of gravitational waves. In this paper, we show that dynamical Chern-Simons and Einstein-dilaton-Gauss-Bonnet gravity cannot be differentiated from general relativity based on the detection of polarization modes alone. To prove this result, we use the Newman-Penrose method and an irreducible decomposition method to find that only the tensorial modes can be detected in both these theories.