Counting Supertubes
arXiv:hep-th/0403025 · doi:10.1088/1126-6708/2004/06/028
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 , 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