Spontaneous vectorization of electrically charged black holes
arXiv:2012.07869 · doi:10.1103/PhysRevD.103.044004
Abstract
In this work, we generalise the spontaneous scalarization phenomena in Einstein-Maxwell-Scalar models to a higher spin field. The result is an Einstein-Maxwell-Vector model wherein a vector field is non-minimally coupled to the Maxwell invariant by an exponential coupling function. We show that the latter guarantees the circumvention of an associated no-hair theorem when the vector field has the form of an electric field. Different than its scalar counterpart, the new spontaneously vectorized Reissner-Nordström (RN) black holes are, always, undercharged while being entropically preferable. The solution profile and domain of existence are presented and analysed.
arXiv comment12 pages, 5 figures
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