学术报告第248期:Critical phenomena in dynamical scalarization of charged black hole

星期三,2022/05/11-14:30 to 16:00

稿件来源:张承勇 发布人:刘念 编辑:腾讯会议

主讲人 (Speaker): 张承勇

主讲人单位 (Speaker's Institute): 暨南大学

邀请人 (Invited by): 张建东

时间 (Time): 星期三,2022/05/11-14:30 to 16:00

地点 (Location): 腾讯会议

摘要 (Abstract): 

We report a new black hole scalarization mechanism and disclose novel dynamical critical phenomena in the process of the nonlinear accretion of the scalar field into black holes. The accretion process can transform a seed black hole into a final scalarized or bald black hole, depending on the initial parameter of the scalar field.  There is a critical parameter and near it all intermediate solutions are attracted to a critical solution and stay there for a long time. At late times, the solutions evolve into bald/scalarized black holes for subcritical/supercritical cases. The final masses of the resulting scalarized/bald black holes satisfy a power-law.

主讲人简介 (Speaker's CV): 

张承勇,暨南大学副教授,2010年本科毕业于上海交通大学;2013年硕士毕业于中国科学院大学;2016年博士毕业于上海交通大学;之后于北京大学, 复旦大学进行博士后研究工作,入选第一届博士后创新人才支持计划. 2019年入职暨南大学。目前研究方向集中于强引力场区域的动力学,如黑洞的稳定性及非线性演化、引力坍缩等。