Recently, spontaneous scalarization of charged black holes has attracted a great deal of attention and motivated several studies of Einstein–Maxwell-scalar models. These studies have, however, only considered a massless and non-self-interacting scalar field. In this work a more realistic treatment of the problem is considered by studying the effects of scalar field mass and self-interacting terms on spontaneous scalarization in Einstein–Maxwell-scalar models, and on the string theory motivated dilatonic black hole. We assess the domains of existence of the black hole solutions, thermodynamic preference and radial profiles. Then we discuss on the stability of the scalarized solutions, focusing on spherical perturbations, finding all studied solutions to be stable.

最近，带电黑洞的自发标量引起了极大的关注，并激发了爱因斯坦-麦克斯韦标量模型的一些研究。但是，这些研究仅考虑了无质量且非自相互作用的标量场。在这项工作中，通过研究标量场质量和自相互作用项对爱因斯坦-麦克斯韦标量模型中自发标量以及对弦论驱动的膨胀论黑洞的影响，考虑了对该问题的更实际处理。我们评估了黑洞解的存在域，热力学偏好和径向分布。然后，我们讨论了标量解的稳定性，着重于球面摄动，发现所有研究的解都是稳定的。