2+1 Black Hole with a Dynamical Conical Singularity

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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11 pages, LaTeX, no figures. Revised version to appear in Class. Quant. Grav. The main changes are an expanded introduction an

Scientific paper

10.1088/0264-9381/13/11/015

We find black hole solutions to Euclidean 2+1 gravity coupled to a relativistic particle which have a dynamical conical singularity at the horizon. These solutions mimic the tree level contribution to the partition function of gravity coupled to a quantum field theory. They are found to violate the standard area law for black hole entropy, their entropy being proportional to the total opening angle. Since each solution depends on the number of windings of the particle path around the horizon, the significance of their summation in the path integral is considered.

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