报告题目：Tests of modified gravitational wave propagations

报  告 人：朱涛 教授，浙江工业大学

研究方向：黑洞物理、宇宙学与引力波物理

报告时间：2023年9月25日（周一）上午10：00

报告地点：量子楼410

报告摘要：

The direct discovery of gravitational waves (GWs) from the coalescence of compact binary components by the LIGO/Virgo/KAGRA Collaboration provides an unprecedented opportunity for exploring the underlying theory of gravity. The gravitational waves, after their generation, will be propagating at cosmological distances before they are detected and can provide invaluable information on the nature of gravity that drives their propagation. Important signatures of theories of gravity beyond general relativity include modified speed and friction, frequency-dependent damping and modified dispersion, and birefringence of gravitational waves. The effects of frequency-dependent damping and modified dispersion are related to the Lorentz violation in gravity, while the birefringence arises from the parity violation in gravity. In this talk, we will focus on the modified gravitational wave propagation in modified gravities. I will briefly review the universal parameterized framework for describing the possible modified gravitational wave propagation in modified gravities and their signatures in the gravitational waveforms. And then discuss how to test them with signals of gravitational waves detected by LIGO/Virgo/KAGRA detectors.

报告人简介：

朱涛，浙江工业大学理学院教授。2010年6月毕业于兰州大学理论物理研究所，曾任美国贝勒大学 CASPER研究中心助理研究教授（2013-2017）。主要从事黑洞物理、宇宙学与引力波物理的前沿研究。主持科技部国家重点研发计划“引力波探测”专项课题（课题负责人），浙江省自然科学基金杰出青年基金，和国家自然科学基金面上项目等多个科研项目。发表论文100多篇，被国内外同行引用2500多次。