Gravitating nonabelian solutions with NUT charge
Eugen Radu
TL;DR
This paper demonstrates the existence of nontrivial Einstein-Yang-Mills solutions with NUT charge, including dyon black holes with nonspherical horizons, using the counterterm method in asymptotically Taub-NUT spacetimes.
Contribution
It introduces new Einstein-Yang-Mills solutions with NUT charge and analyzes their properties, including the impact of a negative cosmological constant.
Findings
Solutions approach asymptotic Taub-NUT spacetime
Existence of dyon black holes with nonspherical horizons
Boundary energy-momentum tensor calculated using counterterm method
Abstract
We argue that the Einstein-Yang-Mills theory presents nontrivial solutions with a NUT charge. These solutions approach asymptotically the Taub-NUT spacetime. They are characterized by the NUT parameter, the mass and the node numbers of the magnetic potential and present both electric and magnetic potentials.=0D The existence of nontrivial Einstein-Yang-Mills solutions with NUT charge in the presence of a negative cosmological constant is also discussed. We use the counterterm subtraction method to calculate the boundary energy-momentum tensor and the mass of these configurations. Also, dyon black hole solutions with nonspherical event horizon topology are shown to exist for a negative cosmological constant.
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