Abstract:
We show that there are two classes of solutions describing static spherically symmetric dyonic dilaton black holes with two nonsingular horizons. The first class includes only the already known solutions that exist for a few special values of the dilaton coupling constant. Solutions in the second class have essentially different properties. They exist for continuously varying values of the dilaton coupling constant but arise only for discrete values of the dilaton field at the horizon. For each given value of the dilaton coupling constant, there can exist several such solutions differing by the number of zeros of the shifted dilaton function in the subhorizon region and separating the domains of singular solutions.
Keywords:
dilatonic gravity, nonextremal black hole, self-gravitating dyon.
This research was supported by the Ministry of
Education and Science of the Russian Federation (Agreement
No. 02.a03.21.0008) and the Russian Foundation for Basic Research (Grant
No. 17-02-01299).
This publication is cited in the following 7 articles:
K. Boshkayev, G. Takey, V.D. Ivashchuk, A.N. Malybayev, G.S. Nurbakova, A. Urazalina, “Stability analysis of circular geodesics in dyonic dilatonic black hole spacetimes”, Physics of the Dark Universe, 48 (2025), 101862
S. V. Bolokhov, V. D. Ivashchuk, “Fluxbrane polynomials and Melvin-like solutions for simple Lie algebras”, Symmetry, 15:6 (2023), 1199
V. D. Ivashchuk, A. N. Malybayev, G. S. Nurbakova, G. Takey, “Photon spheres near dilatonic dyon-like black holes in a model with two Abelian gauge fields and two scalar fields”, Gravit. Cosmol., 29:4 (2023), 411
S. Bolokhov, V. Ivashchuk, “On fluxbrane polynomials for generalized Melvin-like solutions associated with rank 5 Lie algebras”, Symmetry, 14:10 (2022), 2145
A. N. Malybayev, K. A. Boshkayev, V. D. Ivashchuk, “Quasinormal modes in the field of a dyon-like dilatonic black hole”, Eur. Phys. J. C, 81:5 (2021), 475
F B Belissarova, K A Boshkayev, V D Ivashchuk, A N Malybayev, “Special dyon-like black hole solution in the model with two Abelian gauge fields and two scalar fields”, J. Phys.: Conf. Ser., 1690:1 (2020), 012143
S. Hajkhalili, A. Sheykhi, “Topological dyonic dilaton black holes in ads spaces”, Phys. Rev. D, 99:2 (2019), 024028