Scalarized black holes in the Einstein-Maxwell-scalar theory with a quasitopological term

Abstract

We investigate the Einstein-Maxwell-scalar theory with a quasitopological term. Considering exponential couplings to a Maxwell term, to a quasitopological term, and to both terms, we obtain three sets of infinite scalarized charged black holes by taking into account tachyonic instability of a dyonic Reissner-Nordstr\"om black hole. Each set of infinite scalarized charged black holes is classified by the number of $n=0,1,2,\dots{}$, where $n=0$ is called the fundamental black hole and $n=1,2,\dots{}$ denote the $n$-excited black holes. All $n=0$ black holes are stable against the radial perturbation, while all $n=1$, 2 black holes are unstable.

Topics & Concepts