Critical scalarization and descalarization of black holes in a generalized scalar-tensor theory  

作　　者：Yunqi Liu Cheng-Yong Zhang Qian Chen Zhoujian Cao Yu Tian Bin Wang 

机构地区：[1]Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China [2]Department of Physics and Siyuan Laboratory,Jinan University,Guangzhou 510632,China [3]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [4]Department of Astronomy,Beijing Normal University,Beijing 100875,China [5]School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024,China [6]Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [7]Shanghai Frontier Science Center for Gravitational Wave Detection,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2023年第10期44-52,共9页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2020YFC2201400);the National Natural Science Foundation of China(Grant Nos.11975235,12005077,and 12035016);Guangdong Basic and Applied Basic Research Foundation(Grant No.2021A1515012374);partially supported by the National Natural Science Foundation of China(Grant No.12075202)。

摘　　要：We study the critical dynamics in scalarization and descalarization in the fully nonlinear dynamical evolution in the class of theories with a scalar field coupling with both Gauss-Bonnet(GB) invariant and Ricci scalar. We explore the manner in which the GB term triggers black hole(BH) scalarization. A typical type Ⅰ critical phenomenon is observed, in which an unstable critical solution emerges at the threshold and acts as an attractor in the dynamical scalarization. For the descalarization, we reveal that a marginally stable attractor exists at the threshold of the first-order phase transition in shedding off BH hair. This is a new type Ⅰ critical phenomenon in the BH phase transition. Implications of these findings are discussed from the perspective of thermodynamic properties and perturbations for static solutions. We examine the effect of scalar-Ricci coupling on the hyperbolicity in the fully nonlinear evolution and observe that such coupling can suppress the elliptic region and enlarge parameter space in computations.

关 键 词：black hole(de)scalarization dynamical critical behavior marginally attractor 

分 类 号：O412.1[理学—理论物理] P145.8[理学—物理]