报告题目:Weak Cosmic Censorship and Examples of Naked Singularity Formation in Higher-Dimensional Vacua
报告人：张雪峰博士
报告时间：下午 2:00-3:00
报告地点：理学楼 A110
报告题目: Weak Cosmic Censorship and Examples of Naked Singularity Formation in Higher-Dimensional Vacua
报告摘要:The weak cosmic censorship conjecture is perhaps the most important open problem in classical general relativity. Our recent work shows that the vacuum Einstein equations in 5+1 dimensions admit solutions describing naked singularity formation in gravitational collapse from nonsingular asymptotically locally flat initial data. We present a class of specific examples with spherical extra dimensions. Thanks to the Kaluza-Klein dimensional reduction, these spacetimes are constructed by lifting continuously self-similar solutions of the 4-dimensional Einstein-scalar field system with a negative exponential potential. Their existence provides a new test-bed for weak cosmic censorship in higher-dimensional gravity. This is a joint work with Xinliang An.
报告地点：理学楼 A110
报告时间：2016年7月22日（周五）下午 2:00-3:00
报告人简介：
张雪峰，2012年于美国新墨西哥大学获得物理学博士学位，2013年在北京师范大学物理系引力研究中心及天文系从事博士后研究，2016年加盟中山大学物理与天文学院天琴研究中心，任特聘副研究员。研究领域为引力波、引力塌缩、黑洞与裸奇点形成、数学与数值相对论等。
欢迎大家参加！