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Sliding Rings and Spinning Holes
Iosif Bena, Chih-Wei Wang, Nicholas P. Warner
We construct smooth supergravity solutions describing a BPS black ring with a BPS black hole centered at an arbitrary distance above the ring. We find that as one moves the black h…
R^2 Corrections to Black Ring Entropy
Iosif Bena, Per Kraus
Recently, Guica, Huang, Li, and Strominger considered an R^2 correction to the entropy of a black ring, and found a mismatch between supergravity and the CFT. However, such a compa…
Bubbling Supertubes and Foaming Black Holes
Iosif Bena, Nicholas P. Warner
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 trans…
Black Rings in Taub-NUT
Iosif Bena, Per Kraus, Nicholas P. Warner
We construct the most generic three-charge, three-dipole-charge, BPS black-ring solutions in a Taub-NUT background. These solutions depend on seven charges and six moduli, and inte…
Microstates of the D1-D5-KK System
Iosif Bena, Per Kraus
We find supergravity solutions corresponding to all U(1) x U(1) invariant chiral primaries of the D1-D5-KK system. These solutions are 1/8 BPS, carry angular momentum, and are asym…