学术报告第153期-The Geometric Trinity of Gravity: one in Three, or Three in One?

主讲人 (Speaker): 

Tiberiu Harko

主讲人单位 (Speaker's Institute): 

中山大学物理学院

邀请人 (Invited by): 

张鹏鸣

时间 (Time): 

星期二, 2019/11/19 - 14:30 to 15:30

地点 (Location): 

珠海校区海滨红楼17栋206 (Rm 206, Red House 17)

摘要 (Abstract): 

The geometrical nature of gravity is a direct consequence of the universality contained  in the equivalence principle. In the usual formulation of General Relativity, the geometrisation of gravity is performed in terms of the spacetime curvature, an approach which is now the standard description of gravity. However, this is not the only possibility for a geometric interpretation of the gravitational interaction.  We discuss some alternative, though equivalent, formulations of General Relativity,  in which gravity is fully described either by torsion or by non-metricity.  Hence at the theoretical level three apparently unrelated representations of the same underlying theory do exist. We also present in some detail the geometric description of the gravitational field in terms of the non-metricity.

主讲人简介 (Speaker's CV): 

Education: PhD in Astrophysics, The University of Hong Kong, Hong Kong, 2001 Bachelor Degree in Physics, Babes-Bolyai University, Cluj, Romania, 1976 Working Experience: Oct. 1, 2013, to present, Professor, Yat Sen School, Sun Yat Sen University, Guangzhou, P. R. China, January 2013, to present, Professor (Associate), Department of Physics, Babes-Bolyai University, Cluj-Napoca, Romania January 1, 2017, to present, Visiting Professor, School of Physics, Sun Yat Sen University, Guangzhou, P. R. China, January 1, 2013, to present, Professor (Associate), Babes-Bolyai University, Cluj-Napoca, Romania, October1, 2012 to present, Honorary and Senior Honorary Research Associate, Department of Mathematics, University College London, London, United Kingdom October 1, 2004 to October 1, 2012, Research Assistant Professor and Honorary Associate Professor, Department of Physics, The University of Hong Kong, Hong Kong October 1, 2012, to October 1, 2004, Post-Doctoral Fellow, Department of Physics, The University of Hong Kong, Hong Kong