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Habemus superstratum! A constructive proof of the existence of superstrata

We construct the first example of a superstratum: a class of smooth horizonless supergravity solutions that are parameterized by arbitrary continuous functions of (at least) two variables and have the same charges as the supersymmetric D1-D5-P black hole. We work in Type IIB string theory on T 4 or K3 and our solutions involve a subset of fields that can be described by a six...

Un-twisting the NHEK with spectral flows

We show that the six-dimensional uplift of the five-dimensional Near-Horizon-Extremal-Kerr (NHEK) spacetime can be obtained from an AdS 3 × S 3 solution by a sequence of supergravity — but not string theory — dualities. We present three ways of viewing these pseudo-dualities: as a series of transformations in the STU model, as a combination of Melvin twists and T-dualities and...

Non-extremal black hole microstates: fuzzballs of fire or fuzzballs of fuzz?

Iosif Bena 0 Andrea Puhm 0 Bert Vercnocke 0 0 Institut de Physique Tehorique , CEA Saclay, 91191 Gif sur Yvette, France We construct the rst family of microstate geometries of near-extremal black

Black holes and fourfolds

Iosif Bena 0 Hagen Triendl 0 Bert Vercnocke 0 0 Institut de Physique Tehorique , CEA Saclay,CNRS-URA 2306, Orme des Merisiers, 91191 Gif sur Yvette, France We establish a relation between the

Almost BPS but still not renormalized

A key feature of BPS multi-center solutions is that the equations controlling the positions of these centers are not renormalized as one goes from weak to strong coupling. In particular, this means that brane probes can capture the same information as the fully back-reacted supergravity solution. We investigate this non-renormalization property for non-supersymmetric, extremal...

Polchinski-Strassler does not uplift Klebanov-Strassler

Anti-D3-branes at the tip of the Klebanov-Strassler solution with D3-charge dissolved in fluxes give rise, in the probe approximation, to a metastable state. The fully back-reacted smeared solution has singular three-form fluxes in the IR, whose presence suggests a stringy resolution by brane polarization à la Polchinski-Strassler. In this paper we show that there is no...

Imaginary soaring branes: a hidden feature of non-extremal solutions

A key property of many BPS solutions of supergravity is the fact that certain probe branes placed in these solutions feel no force, essentially because electric repulsion and gravitational attraction balance one another. In this letter we show that the existence of brane probes that feel no force is also a property of many non-supersymmetric, non-extremal solutions of...

The backreaction of anti-D3 branes on the Klebanov-Strassler geometry

We present the full numerical solution for the 15-dimensional space of linearized deformations of the Klebanov-Strassler background which preserve the SU(2) × SU(2) × \( {{\mathbb{Z}}_2} \) symmetries. We identify within this space the solution corresponding to anti-D3 branes, (modulo the presence of a certain “subleading” singularity in the infrared). All the 15 integration...

Metastable supertubes and non-extremal black hole microstates

Iosif Bena 0 Andrea Puhm 0 Bert Vercnocke 0 0 Institut de Physique Tehorique , CEA Saclay, 91191 Gif sur Yvette, France We study the dynamics of supertubes in smooth bubbling geometries with three

A black ring with two angular momenta in Taub-NUT

We use the recently-constructed explicit duality transformation that relates a rotating \( \overline {{\text{D}}6} {\text{ - D}}4{\text{ - D}}2{\text{ - D}}0 \) black hole solution to a rotating M5-M2-P black string to construct a non-supersymmetric black ring in Taub-NUT that has two angular momenta, as well as M2 charges and M5 dipole moments. This is the first black ring...

The backreaction of anti-M2 branes on a warped Stenzel space

We find the superpotential governing the supersymmetric warped M-theory solution with a transverse Stenzel space found by Cvetič, Gibbons, Lü and Pope in hep-th/0012011, and use this superpotential to extract and solve the twelve coupled equations underlying the first-order backreacted solution of a stack of anti-M2 branes in this space. These anti-M2 branes were analyzed...

On the inflaton potential from antibranes in warped throats

We compute the force between a stack of smeared antibranes at the bottom of a warped throat and a stack of smeared branes at some distance up the throat, both for anti-D3 branes and for anti-M2 branes. We perform this calculation in two ways: first, by treating the antibranes as probes in the background sourced by the branes and second, by treating the branes as probes in the...

Supersymmetric solutions in six dimensions: a linear structure

The equations underlying all supersymmetric solutions of six-dimensional minimal ungauged supergravity coupled to an anti-self-dual tensor multiplet have been known for quite a while, and their complicated non-linear form has hindered all attempts to systematically understand and construct supersymmetric solutions. In this paper we show that, by suitably re-parameterizing these...

On the existence of meta-stable vacua in Klebanov-Strassler

Iosif Bena 0 Mariana Grana 0 Nick Halmagyi 0 0 Institut de Physique Theorique , CEA Saclay, CNRS-URA 2306, 91191 Gif sur Yvette, France We solve for the complete space of linearized deformations

Double, double supertube bubble

We argue that there exists a new class of completely smooth \( \frac{1}{8} \)-BPS, three-charge bound state configurations that depend upon arbitrary functions of two variables. These configurations are locally \( \frac{1}{2} \)-BPS objects in that if they form an infinite flat sheet then they preserve 16 supersymmetries but even with arbitrary two-dimensional shape modes they...

Scaling BPS solutions and pure-Higgs states

Depending on the value of the coupling, BPS states of type II string theory compactified on a Calabi-Yau manifold can be described as multicenter supergravity solutions or as BPS states in a quiver gauge theory. While states that spread into the Coulomb-branch states can be mapped one-to-one to supergravity states, this is not automatically so for the majority of Higgs-branch...

Supersymmetric consistent truncations of IIB on T 1,1

We study consistent Kaluza-Klein reductions of type IIB supergravity on T 1,1 down to five-dimensions. We find that the most general reduction containing singlets under the global SU(2) × SU(2) symmetry of T 1,1 is \( \mathcal{N} = 4 \) gauged supergravity coupled to three vector multiplets with a particular gauging due to topological and geometric flux. Key to this reduction is...

Persistent anti-brane singularities

Anti-D-branes inserted in warped throat geometries (supported by fluxes that carry D-brane charges) develop unphysical singularities. It has been argued that these singularities could be resolved when one goes beyond the linearized approximation or includes the effects of brane polarization. In this paper we consider anti-D6 branes, whose singularities have been shown to exist at...

Moulting Black Holes

We find a family of novel supersymmetric phases of the D1-D5 CFT, which in certain ranges of charges have more entropy than all known ensembles. We also find bulk BPS configurations that exist in the same range of parameters as these phases, and have more entropy than a BMPV black hole; they can be thought of as coming from a BMPV black hole shedding a “hair” condensate outside...

Supergravity solutions from floating branes

We simplify the equations of motion of five-dimensional ungauged supergravity coupled to three U(1) gauge fields using a floating-brane Ansatz in which the electric potentials are directly related to the gravitational warp factors. We find a new class of non-BPS solutions, that can be obtained linearly starting from an Euclidean four-dimensional Einstein-Maxwell base. This class...