2,698 research outputs found
Bubbling solutions, entropy enhancement and the fuzzball proposal
In this short note we explain the main idea of the work done in
arXiv:0804.4487[hep-th] and arXiv:0812.2942[hep-th]. We present a family of
black hole microstates, the bubbling solutions. We then explain how supertubes
placed in such backgrounds have their entropy enhanced by the presence of the
background dipole charges. This indicates this could account for a large amount
in the entropy of the three charge black hole.Comment: 2 pages, contribution to the Cargese 2008 proceedings: Theory and
Particle Physics: the LHC perspective and beyon
The Foaming Three-Charge Black Hole
We find a very large set of smooth horizonless geometries that have the same
charges and angular momenta as the five-dimensional, maximally-spinning,
three-charge, BPS black hole (J^2 = Q^3). Our solutions are constructed using a
four-dimensional Gibbons-Hawking base space that has a very large number of
two-cycles. The entropy of our solutions is proportional to Q^(1/2). In the
same class of solutions we also find microstates corresponding to zero-entropy
black rings, and these are related to the microstates of the black hole by
continuous deformations.Comment: 14 pages, harvma
A microstate for the 3-charge black ring
We start with a 2-charge D1-D5 BPS geometry that has the shape of a ring;
this geometry is regular everywhere. In the dual CFT there exists a
perturbation that creates one unit of excitation for left movers, and thus adds
one unit of momentum P. This implies that there exists a corresponding
normalizable perturbation on the near-ring D1-D5 geometry. We find this
perturbation, and observe that it is smooth everywhere. We thus find an example
of `hair' for the black ring carrying three charges -- D1, D5 and one unit of
P. The near-ring geometry of the D1-D5 supertube can be dualized to a D6 brane
carrying fluxes corresponding to the `true' charges, while the quantum of P
dualizes to a D0 brane. We observe that the fluxes on the D6 brane are at the
threshold between bound and unbound states of D0-D6, and our wavefunction helps
us learn something about binding at this threshold.Comment: 31 pages, 3 figures; references adde
Mergers and Typical Black Hole Microstates
We use mergers of microstates to obtain the first smooth horizonless
microstate solutions corresponding to a BPS three-charge black hole with a
classically large horizon area. These microstates have very long throats, that
become infinite in the classical limit; nevertheless, their curvature is
everywhere small. Having a classically-infinite throat makes these microstates
very similar to the typical microstates of this black hole. A rough CFT
analysis confirms this intuition, and indicates a possible class of dual CFT
microstates.
We also analyze the properties and the merging of microstates corresponding
to zero-entropy BPS black holes and black rings. We find that these solutions
have the same size as the horizon size of their classical counterparts, and we
examine the changes of internal structure of these microstates during mergers.Comment: 49 pages, 5 figures. v2 references adde
Non-extremal Black Hole Microstates: Fuzzballs of Fire or Fuzzballs of Fuzz ?
We construct the first family of microstate geometries of near-extremal black
holes, by placing metastable supertubes inside certain scaling supersymmetric
smooth microstate geometries. These fuzzballs differ from the classical black
hole solution macroscopically at the horizon scale, and for certain probes the
fluctuations between various fuzzballs will be visible as thermal noise far
away from the horizon. We discuss whether these fuzzballs appear to infalling
observers as fuzzballs of fuzz or as fuzzballs of fire. The existence of these
solutions suggests that the singularity of non-extremal black holes is resolved
all the way to the outer horizon and this "backwards in time" singularity
resolution can shed light on the resolution of spacelike cosmological
singularities.Comment: 34 pages, 10 figure
Bubbles on Manifolds with a U(1) Isometry
We investigate the construction of five-dimensional, three-charge
supergravity solutions that only have a rotational U(1) isometry. We show that
such solutions can be obtained as warped compactifications with a singular
ambi-polar hyper-Kahler base space and singular warp factors. We show that the
complete solution is regular around the critical surface of the ambi-polar
base. We illustrate this by presenting the explicit form of the most general
supersymmetric solutions that can be obtained from an Atiyah-Hitchin base space
and its ambi-polar generalizations. We make a parallel analysis using an
ambi-polar generalization of the Eguchi-Hanson base space metric. We also show
how the bubbling procedure applied to the ambi-polar Eguchi-Hanson metric can
convert it to a global AdS_2xS^3 compactification.Comment: 33 pages, 5 figures, LaTeX; references adde
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