Revisiting the dyonic Majumdar-Papapetrou black holes

TL;DR

This paper extends the Majumdar-Papapetrou solution to include magnetic charges, suggesting the possible existence of multi-magnetic monopole black holes and exploring their cosmological implications.

Contribution

It introduces a generalized solution for static electric and magnetic charges in Einstein-Maxwell theory, broadening the understanding of dyonic black holes without Higgs or non-Abelian fields.

Findings

Extended MP solutions to include magnetic charges

Potential existence of multi-magnetic monopole black holes

Insights into charged particle geodesics around these black holes

Abstract

We extend the Majumdar-Papapetrou (MP) solution of the Einstein-Maxwell (EM) equations which is implied generally for static electric charge in non-rotating metrics to encompass equally well magnetic charges. In the absence of Higgs and non-Abelian gauge fields, 'dyonic' is to be understood in this simpler sense. Cosmologically this may have far-reaching consequences, to the extent that existence of multi-magnetic monopole black holes may become a reality in our universe. Infalling charged particle geodesics may reveal, through particular integrals, their inner secrets which are screened from our observation.