Phantom Black Holes and Sigma Models

Abstract

We construct static multicenter solutions of phantom Einstein-Maxwell-dilaton theory from null geodesics of the target space, leading to regular black holes without spatial symmetry for certain discrete values of the dilaton coupling constant. We also discuss the three-dimensional gravitating sigma models obtained by reduction of phantom Einstein-Maxwell, phantom Kaluza-Klein and phantom Einstein-Maxwell-dilaton-axion theories. In each case, we generate by group transformations phantom charged black hole solutions from a neutral seed.

19 pages

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• Regular black holes: Guilfoyle's electrically charged solutions with a perfect fluid phantom core
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• Uniqueness of higher-dimensional Einstein-Maxwell-phantom dilaton wormholes
• Testing gravity of a regular and slowly rotating phantom black hole by quasi-periodic oscillations
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• Classification of static black holes in Einstein phantom/dilaton Maxwell/anti-Maxwell gravity systems
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• Stability of regular black holes and other compact objects with a charged de Sitter core and a surface matter layer
• Effect of phantom dark energy on the holographic thermalization
• Thermodynamics of black plane solution
• Phantom BTZ black holes
• On generalized Melvin solutions for Lie algebras of rank 4
• Thermodynamics, Phase Transitions, and Geodesic Structure of F(R)-Phantom Banados-Teitelboim-Zanelli (BTZ) Black Holes
• Dilatonic dyon black hole solutions