Dynamic generation or removal of a scalar hair

Journal of High Energy Physics

Regular Article - Theoretical Physics

Wei-Liang Qian¹  Yunqi Liu²  Bin Wang³  Cheng-Yong Zhang⁴  Kai Lin⁵ 

[1] Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, 225009, Yangzhou, China;Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil;Faculdade de Engenharia de Guaratinguetá, Universidade Estadual Paulista, 12516-410, Guaratinguetá, SP, Brazil;Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, 225009, Yangzhou, China;School of Aeronautics and Astronautics, Shanghai Jiao Tong University, 200240, Shanghai, China;Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou University, 225009, Yangzhou, China;Shanghai Frontier Science Center for Gravitational Wave Detection, Shanghai Jiao Tong University, 200240, Shanghai, China;Department of Physics and Siyuan Laboratory, Jinan University, 510632, Guangzhou, China;Escola de Engenharia de Lorena, Universidade de São Paulo, 12602-810, Lorena, SP, Brazil;Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, 430074, Wuhan, Hubei, China;

关键词: Black Holes;    Spacetime Singularities;   

DOI  :  10.1007/JHEP01(2023)074

 received in 2022-08-06, accepted in 2022-12-20,  发布年份 2022

来源: Springer

【 摘 要 】

We study dynamic processes through which the scalar hair of black holes is generated or detached in a theory with a scalar field non-minimally coupled to Gauss-Bonnet and Ricci scalar invariants. We concentrate on the nonlinear temporal evolution of a far-from-equilibrium gravitational system. In our simulations, we choose the initial spacetime to be either a bald Schwarzschild or a scalarized spherically symmetric black hole. Succeeding continuous accretion of the scalar field onto the original black hole, the final fate of the system displays intriguing features, which depend on the initial configurations, strengths of the perturbation, and specific metric parameters. In addition to the scalarization process through which the bald black hole addresses scalar hair, we observe the dynamical descalarization, which removes scalar hair from an original hairy hole after continuous scalar field accretion. We examine the temporal evolution of the scalar field, the metrics, and the Misner-Sharp mass of the spacetime and exhibit rich phase structures through nonlinear dynamical processes.

【 授权许可】

Unknown   
© The Author(s) 2023