威尼斯官方网站,威尼斯官方网站登录

中科院吴文俊数学重点实验室数学物理系列讲座之七

发布者:系统管理员威尼斯官方网站:2011-11-11浏览次数:1


题  目:The positive energy theorem for asymptotically de Sitter spacetimes

报告人:张晓教授

时  间:11月16日15:00pm

地  点:管理科研楼1518

摘  要:De Sitter spacetime can be separated into two parts along two kinds of hypersurfaces and the half-de Sitter spacetimes are covered by the planar and hyperbolic coordinates respectively. Two positive mass theorems were proved previously for certain P-asymptotically de Sitter and H-asymptotically de Sitter initial data sets in joint work with
M. Luo and N. Xie. These initial data sets are asymptotic to time slices of the two kinds of half-de Sitter spacetimes respectively, and their mean curvatures are bounded above by certain constants. When the mean curvatures violate these conditions, the spacelike hypersurfaces are constructed in a joint work with Z. Liang, which have negative total energy in the two kinds of half-de Sitter spacetimes.


主办单位:威尼斯官方网站      国家数学与交叉科学中心合肥分中心     中科院吴文俊数学重点实验室


欢迎感兴趣的师生参加!

 

XML 地图 | Sitemap 地图