Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-05-18
Phys.Rev.D74:066001,2006
Physics
High Energy Physics
High Energy Physics - Theory
40 pages, harvmac. v2 references added, typo corrected
Scientific paper
10.1103/PhysRevD.74.066001
We construct smooth BPS three-charge geometries that resolve the zero-entropy singularity of the U(1) x U(1) invariant black ring. This singularity is resolved by a geometric transition that results in geometries without any branes sources or singularities but with non-trivial topology. These geometries are both ground states of the black ring, and non-trivial microstates of the D1-D5-P system. We also find the form of the geometries that result from the geometric transition of N zero-entropy black rings, and argue that, in general, such geometries give a very large number of smooth bound-state three-charge solutions, parameterized by 6N functions. The generic microstate solution is specified by a four-dimensional hyper-Kahler geometry of a certain signature, and contains a ``foam'' of non-trivial two-spheres. We conjecture that these geometries will account for a significant part of the entropy of the D1-D5-P black hole, and that Mathur's conjecture might reduce to counting certain hyper-Kahler manifolds.
Bena Iosif
Warner Nicholas P.
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