主讲人单位 (Speaker's Institute): 华中科技大学

邀请人 (Invited by): 张建东

时间 (Time): 星期四,2022/06/02-15:00 to 16:30

地点 (Location): 腾讯会议/珠海校区天琴中心1416会议室

摘要 (Abstract): 

In modified gravity theories, such as the Brans-Dicke theory, the background evolution of the Universe and the perturbation around it are different from that in general relativity. Therefore, the gravitational waveforms used to study standard sirens in these theories should be modified. The modifications of the waveforms can be classified into two categories: wave generation effects and wave propagation effects. Hitherto, the waveforms used to study standard sirens in the modified gravity theories incorporate only the wave propagation effects and ignore the wave generation effects. In the Brans-Dicke theory, the wave generation effects include the emission of the scalar breathing polarization h_b and the corrections to the tensor polarizations h+ and h× ; the wave propagation effect is the modification of the luminosity distance for the gravitational waveforms. In this talk, I will demonstrate the method to construct the consistent waveforms which contain both wave generation and propagation effects.

主讲人简介 (Speaker's CV): 

刘谈于2019年在中国科学技术大学获得博士学位。现在是华中科技大学的博士后。研究领域为引力波与引力理论。