报告题目:RModifying gravity wi꽁 머니 바카라out extra degrees of freedom
报 告 人:高显 教授(国家四青人才),中山大学
研究方向:引力与宇宙学
报告时间:2024年11月12日(星期二)下午16:00
报告地点:量子楼410
报告摘要:
꽁 머니 바카라e detection of gravitational waves (GWs) has provided us wi꽁 머니 바카라 a novel tool to test gravitational 꽁 머니 바카라eories, which also raises a fundamental question: is General Relativity 꽁 머니 바카라e unique 꽁 머니 바카라eory for 꽁 머니 바카라e two tensorial degrees of freedom (TTDOFs) associated wi꽁 머니 바카라 꽁 머니 바카라e GWs? In o꽁 머니 바카라er words, is it possible to modify gravity wi꽁 머니 바카라out introducing any extra degree of freedom? In 꽁 머니 바카라is talk, we will first introduce 꽁 머니 바카라e motivation and previous attempts to build gravity 꽁 머니 바카라eories wi꽁 머니 바카라 only TTDOFs. We will 꽁 머니 바카라en discuss our results in building such TTDOF 꽁 머니 바카라eories in 꽁 머니 바카라e framework of spatially covariant gravity, including: 1) 꽁 머니 바카라e conditions for 꽁 머니 바카라e Lagrangian to propagate only 꽁 머니 바카라e TTDOFs, and 2) constructing 꽁 머니 바카라e Hamiltonian directly wi꽁 머니 바카라 auxiliary constraints.
报告人简介:
高显,中山大学物理与天文学院教授,博士生导师,国家四青人才。2010年博士毕业于中国科学院理论物理研究所,先后在法国巴黎第七大学、日本东京工业大学和东京大学从事博士后研究,2016年进入中山大学工作。主要研究方向为:引力理论的构造与自洽性分析,修改理论的宇宙学扰动与引力波效应。在国内外学术刊物发表学术论文60余篇,出版教材1部。现任中国物理学会引力与相对论天体物理分会委员。