http://arxiv.org/abs/1909.03815
Gravitational waves (GWs) provide an excellent opportunity to test the gravity in the strong gravitational fields. In this article, we calculate the waveform of GWs, produced by the coalescence of compact binaries, in the general ghost-free parity-violating gravities. By comparing the two circular polarization modes, we find the effects of amplitude birefringence and velocity birefringence of GWs caused by the parity violation in gravity, which are explicitly presented in the GW waveforms by the amplitude and phase modifications respectively. Combining the two modes, we obtain the GW waveforms in the Fourier domain, and find that the deviations from those in General Relativity are dominated by effects of velocity birefringence of GWs.
J. Qiao, T. Zhu, W. Zhao, et. al.
Tue, 1 Oct 19
89/90
Comments: 8 pages, typos are corrected
You must be logged in to post a comment.