title: Entropy enhancement and black hole microstates.
abstract: We show that the entropy of fluctuating two-charge supertubes placed in three-charge scaling microstate solutions depends on their "effective" charges, which in strong magnetic fields can be much larger than their charges. This leads to a much larger entropy than one naively would expect. Since fluctuating supertubes source smooth geometries in certain duality frames, we propose that such an entropy enhancement mechanism might lead to a black-hole-like entropy coming entirely from configurations that are smooth and horizonless in the regime of parameters where the classical black hole exists.
authors.affiliation: IPhT, CEA Saclay, 91191 Gif sur Yvette, France.
authors.forename: Iosif
authors.initials: I
authors.lastname: Bena
authors.forename: Nikolay
authors.initials: N
authors.lastname: Bobev
authors.forename: Clément
authors.initials: C
authors.lastname: Ruef
authors.forename: Nicholas P
authors.initials: NP
authors.lastname: Warner