Counting Supertubes

Abstract

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.

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

References in corpus (4)

• Gravity solutions for the D1-D5 system with angular momentum
• Black Rings, Supertubes, and a Stringy Resolution of Black Hole Non-Uniqueness
• Constructing "hair" for the three charge hole
• Three Charge Supertubes and Black Hole Hair

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