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We define intrinsic torsion in generalised geometry and use it to introduce a new notion of generalised special holonomy. We then consider generic warped supersymmetric flux compactifications of M theory and Type II of the form…

High Energy Physics - Theory · Physics 2016-07-07 André Coimbra , Charles Strickland-Constable , Daniel Waldram

Using the method of simple current extensions, asymmetric Gepner models of Type IIB with N=1 space-time supersymmetry are constructed. The combinatorics of the massless vector fields suggests that these classical Minkowski string vacua…

High Energy Physics - Theory · Physics 2017-03-08 Ralph Blumenhagen , Michael Fuchs , Erik Plauschinn

We study $D \geq 4$-dimensional half-maximal flux backgrounds using exceptional field theory. We define the relevant generalised structures and also find the integrability conditions which give warped half-maximal $\mathrm{Minkowski}_D$ and…

High Energy Physics - Theory · Physics 2017-10-10 Emanuel Malek

We present a consistent truncation of IIB supergravity on manifolds admitting a Sasaki-Einstein structure, which keeps the metric and five real scalar fields. This theory can be further truncated to a constrained one-parameter family that…

High Energy Physics - Theory · Physics 2014-11-20 Kostas Skenderis , Marika Taylor , Dimitrios Tsimpis

We consider the most general solutions of eleven-dimensional supergravity preserving $N=2$ supersymmetry whose metrics are warped products of three-dimensional anti-de Sitter space with an eight-dimensional manifold, focusing on those…

High Energy Physics - Theory · Physics 2023-05-17 Anthony Ashmore

We summarize our geometric and topological description of compact eight-manifolds which arise as internal spaces in ${\cal N}=1$ flux compactifications of M-theory down to $\mathrm{AdS}_3$, under the assumption that the internal part of the…

High Energy Physics - Theory · Physics 2023-09-28 Elena Mirela Babalic , Calin Iuliu Lazaroiu

We perform a systematic analysis of generic string flux compactifications, making use of Exceptional Generalized Geometry (EGG) as an organizing principle. In particular, we establish the precise map between fluxes, gaugings of maximal 4d…

High Energy Physics - Theory · Physics 2010-11-23 G. Aldazabal , E. Andres , P. G. Camara , M. Graña

We consider Einstein gravity coupled to an n-form field strength in D dimensions. Such a theory cannot be supersymmetrized in general, we nevertheless propose a pseudo-Killing spinor equation and show that the AdS X Sphere vacua have the…

High Energy Physics - Theory · Physics 2011-07-05 H. Lu , Zhao-Long Wang

We first construct a consistent Kaluza-Klein reduction ansatz for type IIB theory compactified on Sasaki-Einstein manifolds Y^{p,q} with Freund-Rubin 5-form flux giving rise to minimal N=2 gauged supergravity in five dimensions. We then…

High Energy Physics - Theory · Physics 2008-11-26 Alex Buchel , James T. Liu

We find analytic solutions of type IIB supergravity on geometries that locally take the form $\text{Mink}\times M_4\times \mathbb{C}$ with $M_4$ a generalised complex manifold. The solutions involve the metric, the dilaton, NSNS and RR flux…

High Energy Physics - Theory · Physics 2015-06-23 Philip Candelas , Andrei Constantin , Cesar Damian , Magdalena Larfors , Jose Francisco Morales

We extend the spinorial geometry techniques developed for the solution of supergravity Killing spinor equations to the kappa symmetry condition for supersymmetric brane probe configurations in any supergravity background. In particular, we…

High Energy Physics - Theory · Physics 2009-11-11 G. Papadopoulos , P. Sloane

We discuss a novel strategy to construct 4D N=0 stable flux vacua of type II string theory, based on the existence of BPS bounds for probe D-branes in some of these backgrounds. In particular, we consider compactifications where D-branes…

High Energy Physics - Theory · Physics 2009-11-13 Dieter Lust , Fernando Marchesano , Luca Martucci , Dimitrios Tsimpis

In the context of supersymmetric compactifications of type II supergravity to four dimensions, we show that orientifold sources can be compatible with a generalized SU(3) x SU(3)-structure that is neither strictly SU(3) nor static SU(2). We…

High Energy Physics - Theory · Physics 2009-11-18 Paul Koerber , Dimitrios Tsimpis

We determine the constraints imposed on the 10d target superspace geometry by the requirement of classical kappa-symmetry of the Green-Schwarz superstring. In the type I case we find that the background must satisfy a generalization of type…

High Energy Physics - Theory · Physics 2016-07-20 A. A. Tseytlin , L. Wulff

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…

High Energy Physics - Theory · Physics 2009-10-31 A. Ceresole , G. Dall'Agata

We construct infinite new classes of supersymmetric solutions of D=11 supergravity that are warped products of AdS_3 with an eight-dimensional manifold M_8 and have non-vanishing four-form flux. In order to be compact, M_8 is constructed as…

High Energy Physics - Theory · Physics 2008-11-26 Jerome P. Gauntlett , Oisin A. P. Mac Conamhna , Toni Mateos , Daniel Waldram

In these lectures we review Generalized Complex Geometry and discuss two main applications to string theory: the description of supersymmetric flux compactifications and the supersymmetric embedding of D-branes. We start by reviewing…

High Energy Physics - Theory · Physics 2011-02-18 Paul Koerber

We analyse the geometry of generic Minkowski $\mathcal{N}=1$, $D=4$ flux compactifications in string theory, the default backgrounds for string model building. In M-theory they are the natural string theoretic extensions of $\mathrm{G}_2$…

High Energy Physics - Theory · Physics 2022-02-04 Anthony Ashmore , Charles Strickland-Constable , David Tennyson , Daniel Waldram

We demonstrate that M-theory compactifications on 7-manifolds of G_2 holonomy, which yield 4d N=1 supersymmetric systems, often admit at special loci in their moduli space a description as type IIA orientifolds. In this way, we are able to…

High Energy Physics - Theory · Physics 2010-05-28 Shamit Kachru , John McGreevy

In this letter we present a scan for new vacua within consistent truncations of eleven/ten-dimensional supergravity down to five dimensions that preserve $N = 2$ supersymmetry, after their complete classification in arXiv:2112.03931. We…

High Energy Physics - Theory · Physics 2024-04-30 Gregoire Josse , Francesco Merenda