2025/12/23 by M. E. Abishev, V. D. Ivashchuk, Abishev, M. E. +5
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories
paper · doi:10.48550/arxiv.2512.20756
openalex publication_date 2025/12/23 · openalex created_date 2025/12/26 · openalex updated_date 2026/07/28
Dilatonic black hole dyon-like solutions in the gravitational 4d model with a scalar field, two 2-forms, two dilatonic coupling constants λi ≠ 0, i =1,2, obeying λ1 ≠ - λ2 and the sign parameter ε = ± 1 for scalar field kinetic term are overviewed. Here ε = - 1 corresponds to a phantom scalar field. The solutions are defined up to solutions of two master equations for two moduli functions, when λ2i ≠ 1/2 for ε = - 1. Several integrable cases corresponding to Lie algebras A1 + A1, A2, B2 = C2 and G2 are considered. Some physical parameters of the solutions are derived: gravitational mass, scalar charge, Hawking temperature, black hole area entropy and PPN parameters β and γ. Bounds on the gravitational mass and scalar charge (based on a certain conjecture) are presented.