Gianguido Dall'Agata

Non-Kähler string backgrounds and their five torsion classes

We discuss the mathematical properties of six-dimensional non-Kahler manifolds which occur in the context of N=1 supersymmetric heterotic and type IIA string compactifications with non-vanishing background H-field. The intrinsic torsion of the associated SU(3) structures falls into five different classes. For heterotic compactifications we present an explicit dictionary between the supersymmetry conditions and these five torsion classes. We show that the non-Ricci-flat Iwasawa manifold solves the supersymmetry conditions with non-zero H-field, so that it is a consistent heterotic supersymmetric groundstate.

General matter coupled N=2, D=5 gauged supergravity.

We give the full Lagrangean and supersymmetry transformation rules for D=5 , N=2 supergravity interacting with an arbitrary number of vector, tensor and hyper-multiplets, with gauging of the R -symmetry group SU(2)R as well as a subgroup K of the isometries of the scalar manifold. Among the many possible applications, this theory provides the setting where a supersymmetric brane-world scenario could occur. We comment on the presence of AdS vacua and BPS solutions that would be relevant towards a supersymmetric smooth realization of the Randall–Sundrum “alternative to compactification”. We also add some remarks on the connection between this most general 5D fully coupled supergravity model and type IIB theory on the T11 manifold.

Spectrum of type IIB supergravity on AdS(5) x T**11: Predictions on N=1 SCFT's

We derive the full Kaluza-Klein spectrum of type IIB supergravity compactified on

First-order flow equations for extremal black holes in very special geometry

{\mathrm{AdS}}_{5}{\ifmmode\times\else\texttimes\fi{}\mathrm{T}}^{11}

Evidence for a family of SO(8) gauged supergravity theories

with

Flow equations and attractors for black holes in N = 2 U(1) gauged supergravity

{\mathrm{T}}^{11}=SU(2)\ifmmode\times\else\texttimes\fi{}\mathrm{SU}(2)/U(1).

Hypermultiplets, domain walls, and supersymmetric attractors

From the knowledge of the spectrum and general multiplet shortening conditions, we make a refined test of the AdS-CFT correspondence, by comparison between various shortenings of

Type IIB supergravity compactified on a Calabi-Yau manifold with H-fluxes

SU(2,2|1)

D = 4, N=2 gauged supergravity in the presence of tensor multiplets

supermultiplets on

D = 10, N = IIB supergravity

{\mathrm{AdS}}_{5}