Counting Supertubes

Details Counting Supertubes Counting Supertubes

2004-03-01

arxiv.org/abs/hep-th/0403025v4

JHEP 0406 (2004) 028

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, v2: reference corrected; v3: few corrections and explicit derivation of a relation are added to appendix A

Scientific paper

10.1088/1126-6708/2004/06/028

The quantum states of the supertube are counted by directly quantizing the linearized Born-Infeld action near the round tube. The result is an entropy $S = 2\pi \sqrt{2 (Q_{D0}Q_{F1}-J)}$, in accord with conjectures in the literature. As a result, supertubes may be the generic D0-F1 bound state. Our approach also shows directly that supertubes are marginal bound states with a discrete spectrum. We also discuss the relation to recent suggestions of Mathur et al involving three-charge black holes.

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