English

Dyon-like black hole solutions in the model with two Abelian gauge fields

High Energy Physics - Theory 2025-12-25 v1 General Relativity and Quantum Cosmology

Abstract

Dilatonic black hole dyon-like solutions in the gravitational 4d4d model with a scalar field, two 2-forms, two dilatonic coupling constants λi0\lambda_i \neq 0, i=1,2i =1,2, obeying λ1λ2\lambda_1 \neq - \lambda_2 and the sign parameter ε=±1\varepsilon = \pm 1 for scalar field kinetic term are overviewed. Here ε=1\varepsilon = - 1 corresponds to a phantom scalar field. The solutions are defined up to solutions of two master equations for two moduli functions, when λi21/2\lambda^2_i \neq 1/2 for ε=1\varepsilon = - 1. Several integrable cases corresponding to Lie algebras A1+A1A_1 + A_1, A2A_2, B2=C2B_2 = C_2 and G2G_2 are considered. Some physical parameters of the solutions are derived: gravitational mass, scalar charge, Hawking temperature, black hole area entropy and PPN parameters β\beta and γ\gamma. Bounds on the gravitational mass and scalar charge (based on a certain conjecture) are presented.

Keywords

Cite

@article{arxiv.2512.20756,
  title  = {Dyon-like black hole solutions in the model with two Abelian gauge fields},
  author = {M. E. Abishev and V. D. Ivashchuk and A. N. Malybayev and S. Toktarbay},
  journal= {arXiv preprint arXiv:2512.20756},
  year   = {2025}
}

Comments

10 pages, LaTex