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Counting Supertubes

Belkis Cabrera Palmer·Donald Marolf
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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 $S = 2π\sqrt{2 (Q_{D0}Q_{F1}-J)}$, 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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Belkis Cabrera Palmer, Donald Marolf. 2005-01-27. Counting Supertubes. https://doi.org/10.1088/1126-6708%2F2004%2F06%2F028

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