报告题目:Testing alternative theories of gravity with space-based gravitational wave detectors

报告人：郜青 副教授（西南大学）

报告时间：2023年8月15日（周二）下午 14:00-15:30

报告地点：浙江工业大学理学楼A 二楼师生活动中心

摘 要 (Abstract): We use gravitational waves (GWs) from binary black holes (BBHs) and neutron stars inspiraling into intermediate-mass black holes to evaluate how accurately the future space-based GW detectors such as LISA, Taiji and TianQin and their combined networks can determine source parameters and constrain alternative theories of gravity. We find that, compared with single detector, the detector network can greatly improve the estimation errors of source parameters, especially the sky localization, but the improvement of the constraint on the graviton mass $m_g$ and the Brans-Dicke coupling constant $omega_{BD}$ is small. We also consider possible scalar modes existed in alternative theories of gravity and we find the inclusion of the scalar mode has little effect on the constraints on source parameters, $m_g$, and $omega_{BD}$ and the parametrized amplitude $A_B$ of scalar modes are small.

报告人简介(Bio): 郜青，副教授。2015年12月获华中科技大学理论物理专业博士学位。2016年05月进入西南大学物理科学与技术学院工作。2018年8月至2019年8月美国加州理工学院访问学者。研究方向为引力理论、宇宙学等。目前在国内外期刊上（Physics Letters B，Physical Review D，Classical and Quantum Gravity，The European Physical Journal C，Monthly Notices of the Royal Astronomical Society等）已发表论文30余篇，其中2篇入选ESI高影响论文。

邀请人:王安忠 教授