Waveform of gravitational waves in the ghost-free parity-violating gravities

被引：46

作者：

Qiao, Jin ^{[1
,2
]}

Zhu, Tao ^{[1
,2
]}

Zhao, Wen ^{[3
,4
]}

Wang, Anzhong ^{[5
]}

机构：

[1] Zhejiang Univ Technol, Inst Theoret Phys & Cosmol, Hangzhou 310032, Zhejiang, Peoples R China

[2] Zhejiang Univ Technol, United Ctr Gravitat Wave Phys UCGWP, Hangzhou 310032, Zhejiang, Peoples R China

[3] Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China

[4] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China

[5] Baylor Univ, Phys Dept, GCAP CASPER, Waco, TX 76798 USA

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevD.100.124058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 an extension of the Chem-Simons gravity by including higher derivatives of the coupling scalar field. By comparing the two circular polarization modes, we find the effects of amplitude birefringence and velocity birefringence of GWs in their propagation 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. In addition, we also map the effects of the parity violation on the waveform onto the parametrized post-Einsteinian (PPE) framework and identify explicitly the PPE parameters.

引用

页数：9