Strings on a Cone and Black Hole Entropy

Details Strings on a Cone and Black Hole Entropy Strings on a Cone and Black Hole Entropy

1994-08-17

arxiv.org/abs/hep-th/9408098v3

Nucl.Phys. B439 (1995) 650-664

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, harvmac, revised version published in Nucl. Phys. B

Scientific paper

10.1016/0550-3213(95)00050-3

String propagation on a cone with deficit angle $2\pi (1- \frac{1}{N} ) $ is described by constructing a non-compact orbifold of a plane by a $Z_{N}$ subgroup of rotations. It is modular invariant and has tachyons in the twisted sectors that are localized to the tip of the cone. A possible connection with the quantum corrections to the black hole entropy is outlined. The entropy computed by analytically continuing in N would receive contribution only from the twisted sectors and be naturally proportional to the area of the event horizon. Evidence is presented for a new duality for these orbifolds similar to the ${\scriptstyle R} \rightarrow {1\over R} $ duality.

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