Gauss-Bonnet black holes supported by a nonlinear electromagnetic field

Abstract

We study $D$-dimensional charged static spherically symmetric black hole solutions in Gauss-Bonnet theory coupled to nonlinear electrodynamics defined as arbitrary functions of the field invariant and constrained by several physical conditions. These solutions are characterized in terms of the mass parameter $m$, the electromagnetic energy $\epsilon$ and the Gauss-Bonnet parameter $l_{\alpha }^2$. We find that a general feature of these solutions is that the metric behaves in a different way in $D=5$ and $D>5$ space-time dimensions. Moreover, such solutions split into two classes, according to whether they are defined everywhere or show branch singularities, depending on ($m,\epsilon ,l_{\alpha }^2$). We describe qualitatively the structures comprised within this scenario, which largely extends the results obtained in the literature for several particular families of nonlinear electrodynamics. An explicit new example, illustrative of our results, is introduced. Finally we allow non-vanishing values of the cosmological constant length $l_{\Lambda }^2$, and study the existence of new structures, in both asymptotically Anti-de Sitter and de Sitter spaces.

13 pages; to appear in Phys. Rev. D

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• Classical resolution of black hole singularities in arbitrary dimension
• Five-dimensional compact stars in Einstein-Gauss-Bonnet gravity
• Structure and thermodynamics of charged nonrotating black holes in higher dimensions