Scalar hairy black holes in Einstein-Maxwell-conformally coupled scalar theory

Abstract

We obtain scalar hairy black holes from Einstein-Maxwell-conformally coupled scalar (EMCS) theory with the scalar coupling parameter $\alpha$ to the Maxwell term. In case of $\alpha =0$, the $\alpha =0$ EMCS theory provides constant (charged) scalar hairy black hole and charged BBMB (Bocharova-Bronnikov-Melnikov-Bekenstein) black hole where the former is stable against full perturbations, while the latter remains unstable because it belongs to an extremal black hole. It is noted that for $\alpha \ne 0$, the unstable Reissner-Nordström black holes without scalar hair imply infinite branches of $n=0(\alpha \ge 8.019),1(\alpha \ge 40.84),2(\alpha \ge 99.89),\cdots$ scalarized charged black holes. In addition, for $\alpha >0$, we develop a single branch of scalarized charged black hole solutions inspired by the constant scalar hairy black hole. Finally, we obtain the numerical charged BBMB black hole solution from the $\alpha =0$ EMCS theory.

arXiv comment19 pages, 5 figures, version to appear in PLB

References in corpus (11)

• Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling
• New Gauss-Bonnet black holes with curvature induced scalarization in the extended scalar-tensor theories
• Evasion of No-Hair Theorems and Novel Black-Hole Solutions in Gauss-Bonnet Theories
• Spontaneous scalarisation of charged black holes
• Quasinormal modes of maximally charged black holes
• Instability of Reissner-Nordström black hole in Einstein-Maxwell-scalar theory
• Stability of scalarized charged black holes in the Einstein-Maxwell-Scalar theory
• C-metric with a conformally coupled scalar field in a magnetic universe
• Embedding hairy black holes in a magnetic universe
• Black holes in massive conformal gravity
• Black holes in new massive conformal gravity

Cited by in corpus (17)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Black holes with scalar hair in light of the Event Horizon Telescope
• Large and Ultra-compact Gauss-Bonnet Black Holes with a Self-interacting Scalar Field
• Radial perturbations of the scalarized black holes in Einstein-Maxwell-conformally coupled scalar theory
• Spherical inhomogeneous solutions of Einstein and scalar-tensor gravity: a map of the land
• Scalarization of horizonless reflecting stars: neutral scalar fields non-minimally coupled to Maxwell fields
• Compact objects with primary hair in shift and parity symmetric beyond Horndeski gravities
• Novel exact ultra-compact and ultra-sparse hairy black holes emanating from regular and phantom scalar fields
• Analytic and asymptotically flat hairy (ultra-compact) black-hole solutions and their axial perturbations
• Black hole with primary scalar hair in Einstein-Weyl-Maxwell-conformal scalar theory
• Spontaneous scalarization of Gauss-Bonnet black holes surrounded by massive scalar fields
• Electromagnetic dual Einstein-Maxwell-scalar models
• Perturbations of Black Holes Surrounded by Anisotropic Matter Field
• Shadow constraints of charged black hole with scalar hair and gravitational waves from extreme mass ratio inspirals
• Conformal scalar NUT-like dyons in conformal electrodynamics
• Extending Bekenstein's theorem in order to search exact solutions of Einstein-Maxwell-conformal-scalar equations
• Shadow cast by a rotating black hole with anisotropic matter