Time: 10:00-12:00 (UTC/GMT+8:00, Beijing/Shanghai), Apr. 13 (Wedn.), 2022

Tencent Meeting URL: https://meeting.tencent.com/dm/psSJWmfBjuBt

Meeting Room ID: 774-677-679

Passcode: 112358

Speaker: Cheng-Yong Zhang (JNU)

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 badl/scalarized black holes for subcritical/supercritical cases. The final masses of the resulting scalarized/bald black holes satisfy a power-law.