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Dynamic generation or removal of a scalar hair

Yunqi Liu Cheng-Youg Zhang; Wei-Liang Qian; Kai Lin; Bin Wang

Journal of high energy physics v.2023, n.1 , art. 74, p.1-25, 2023

Springer 2023

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  • Título:
    Dynamic generation or removal of a scalar hair
  • Autor: Yunqi Liu
  • Cheng-Youg Zhang; Wei-Liang Qian; Kai Lin; Bin Wang
  • Assuntos: BURACOS NEGROS; Black Holes; Spacetime Singularities
  • É parte de: Journal of high energy physics v.2023, n.1 , art. 74, p.1-25, 2023
  • Notas: Disponível em: https://doi.org/10.1007/JHEP01(2023)074. Acesso em: 27 out. 2023
  • Descrição: 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.
  • Editor: Springer
  • Data de criação/publicação: 2023
  • Formato: Art.74, p. 1-25.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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