学术报告第193期：Internal Structure of Black Holes with Scalar Hairs

主讲人 (Speaker): 

李理

主讲人单位 (Speaker's Institute): 

中国科学院理论物理研究所

邀请人 (Invited by): 

苗荣欣

时间 (Time): 

星期四, 2020/12/10 - 10:00 to 12:00

地点 (Location): 

腾讯会议

摘要 (Abstract): 

       We establish a no inner-horizon theorem for black holes with scalar hairs. Considering a general gravitational theory with a charged scalar field, we prove that there exists no inner Cauchy horizon for both spherical and planar black holes with non-trivial scalar hair. The hairy black holes approach to a spacelike singularity at late interior time. This result is independent of the form of scalar potentials as well as the asymptotic boundary of spacetimes.  We prove that the geometry near the singularity takes a universal Kasner form when the kinetic term of the scalar hair dominates, while novel behaviors different from the Kasner form are uncovered when the scalar potential become important to the background. For the hyperbolic horizon case, we show that hairy black hole can only has at most one inner horizon, and a concrete example with an inner horizon is presented. All these features are also valid for the Einstein gravity coupled with neutral scalars.

主讲人简介 (Speaker's CV): 

李理，2014年博士毕业于中国科学院理论物理研究所，2014年至2019年先后在希腊克里特大学和美国里海大学从事博士后研究工作，2019年3月底入职中国科学院理论物理研究所任副研究员。研究领域主要包括引力理论、黑洞物理和引力全息性质，在PRL、JHEP、PRD等刊物发表论文37篇，被引用1400余次（Inspire 数据）。