Electrostatics in a Schwarzschild black hole pierced by a cosmic string

Abstract

We explicitly determine the expression of the electrostatic potential generated by a point charge at rest in the Schwarzschild black hole pierced by a cosmic string. We can then calculate the electrostatic self-energy. From this, we find again the upper entropy bound for a charged object by employing thermodynamics of the black hole.

Latex, 8 pages, 1 figure in latex

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