Einstein-Einstein理论和GW170817之后的广义TeVeS理论中的引力波
Gravitational waves in Einstein-Æther theory and generalized TeVeS theory after GW170817
摘要：
本文研究了Einstein-æther理论和广义TeVeS理论中的极化内容。爱因斯坦理论有五个极化，而广义的TeVeS理论有六个。特别地，横向和纵向呼吸极化是混合的。本文还探讨了利用脉冲星定时阵探测爱因斯坦理论中的外极化的可能性。分析表明，在该理论中，利用脉冲星定时阵列很难区分不同的偏振。对于广义TeVeS理论，由于GW 170817设定的速度界限，其中一个传播模式的传播速度比光速快得多。在某些参数子空间中，强耦合不发生，因此该理论被排除。
英文摘要：
In this paper, the polarization contents of Einstein-æther theory and the generalized TeVeS theory are studied. The Einstein-æther theory has five polarizations, while the generalized TeVeS theory has six. In particular, transverse and longitudinal breathing polarization are mixed. The~possibility of using pulsar timing arrays to detect the extra polarizations in Einstein-æther theory was also investigated. The analysis showed that different polarizations cannot be easily distinguished by using pulsar timing arrays in this theory. For generalized TeVeS theory, one of the propagating modes travels much faster than the speed of light due to the speed bound set by GW170817. In some parameter subspaces, the strong coupling does not take place, so this theory is excluded.
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