Charged black holes in non-linear Q-clouds with O(3) symmetry
Abstract
We construct charged soliton solutions around spherical charged black holes with no angular momentum in asymptotically flat spacetime. These solutions are non-linear generalizations of charged scalar clouds, dubbed Q-ball hair or Q-clouds, and they do not contradict the non-existence theorem for free (linear) scalar clouds around charged black holes. These solutions are the first examples of O(3) solutions for Q-clouds around a non-extremal and non-rotating BH in the Abelian gauge theory. We show that a solution exists with an infinitely short hair in the limit of extremal black holes. We discuss the evolution of scalar hair in a system with fixed total charge and describe how the existence of Q-clouds is related to the weak-gravity conjecture. The reason that the no-hair theorem by Mayo and Bekenstein cannot be applied to the massive scalar field is also discussed.
Keywords
Cite
@article{arxiv.1907.04982,
title = {Charged black holes in non-linear Q-clouds with O(3) symmetry},
author = {Jeong-Pyong Hong and Motoo Suzuki and Masaki Yamada},
journal= {arXiv preprint arXiv:1907.04982},
year = {2020}
}
Comments
6 pages, 5 figures; v2: minor revision, added a comment on no-hair theorem by Mayo and Bekenstein