Nonlinear extensions of gravitating dyons: from NUT wormholes to Taub-Bolt instantons

Abstract

Recent work has shown the existence of a unique nonlinear extension of electromagnetism which preserves conformal symmetry and allows for the freedom of duality rotations. Moreover, black holes and gravitational waves have been found to exist in this nonlinearly extended electrovacuum. We generalise these dyonic black holes in two major ways: with the relaxation of their horizon topology and with the inclusion of magnetic mass. Motivated by recent attention to traversable wormholes, we use this new family of Taub-NUT spaces to construct AdS wormholes. We explore some thermodynamic features by using a semi-classical approach. Our results show that a phase transition between the nut and bolt configurations arises in a similar way to the Maxwellian case.

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• Quasinormal modes of charged black holes with corrections from nonlinear electrodynamics
• Electromagnetized black holes and swirling backgrounds in nonlinear electrodynamics: The ModMax case
• Hamiltonian analysis of ModMax nonlinear electrodynamics in the first order formalism
• Traversable Wormholes in Einstein-Euler-Heisenberg Gravity: Geometry, Energy Conditions, and Gravitational Lensing
• Dual Charges for AdS Spacetimes and the First Law of Black Hole Mechanics
• Exact multiblack hole spacetimes in Einstein-ModMax theory
• Nonlinearly charging the conformally dressed black holes preserving duality and conformal invariance
• Gravitational instantons with conformally coupled scalar fields
• Axial anomaly in nonlinear conformal electrodynamics
• $Ad{S}_2$ holography and ModMax
• Well-posed non-vacuum solutions in Robinson--Trautman geometry
• Waves and strings in an interacting conformal chiral 2-form theory in six dimensions
• Double Wick rotations between symmetries of Taub-NUT, near-horizon extreme Kerr, and swirling spacetimes
• Self-dual instantons and gravitating dyons in non-Abelian ModMax theory
• Thermodynamics and optical aspects of ModMax black holes in higher order curvature gravity with quintessence dark energy
• Nonconformally Ricci-flat instantons in Conformal Gravity with and without nonlinear matter fields