Electric and dilatonic fields of a charged massive particle at rest in the field of a charged dilaton black hole

Author:

Nahomi Kan, Kiyoshi Shiraishi

Keyword:

General Relativity and Quantum Cosmology, General Relativity and Quantum Cosmology (gr-qc), High Energy Physics - Theory (hep-th)

journal:

date:

2023-09-03 16:00:00

Abstract

We study linear-perturbation equations for the two-body system of a charged dilaton black hole, of which dilaton coupling constant is $\alpha$, and electrically and dilatonically charged massive particle at rest, of which mass is $m$, electric charge $q$, and dilatonic charge $\beta m$. We find that a consistent condition for the coupled equations corresponds to the equilibrium condition of the test particle. The expressions of classical fields are given in closed analytical formulas in the most interesting case with $\beta=\alpha$. We examine the electrical field around a charged dilaton black hole especially in the limit of the maximum electric charge and we find the electric Meissner effect which has been found for the Reissner-Nordstr\"om black hole in the Einstein-Maxwell system.

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