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We consider the six-dimensional Salam-Sezgin supergravity in the presence of codimension-2 branes. In the case that the branes carry only tension, we provide a way to supersymmetrise them by adding appropriate localised Fayet-Iliopoulos…

High Energy Physics - Theory · Physics 2009-05-20 Hyun Min Lee , Antonios Papazoglou

We report on the construction of four dimensional gauged supergravity models that can be interpreted as type IIB orientifold compactification in presence of 3-form fluxes and D3--branes. We mainly address our attention to the symplectic…

High Energy Physics - Theory · Physics 2009-11-10 Silvia Vaulá

We describe a broad class of time-dependent exact wave solutions to 6D gauged chiral supergravity with two compact dimensions. These 6D solutions are nontrivial warped generalizations of 4D pp-waves and Kundt class solutions and describe…

High Energy Physics - Theory · Physics 2010-02-03 Andrew J. Tolley , C. P. Burgess , Claudia de Rham , D. Hoover

We study the transmission of supersymmetry breaking via gravitational interactions in a five-dimensional brane-world compactified on $S^1/Z_2$. We assume that chiral matter and gauge fields are confined at the orbifold fixed points, where…

High Energy Physics - Theory · Physics 2009-11-07 Tony Gherghetta , Antonio Riotto

We discuss the structure of the soft supersymmetry breaking terms in a MSSM like model, which can be derived from D7-branes with chiral matter fields from 2-form f-fluxes and supersymmetry breaking from 3-form G-fluxes.

High Energy Physics - Theory · Physics 2009-10-07 D. Lust , S. Reffert , S. Stieberger

We consider type II (non-)geometric flux backgrounds in the absence of brane sources, and construct their explicit embedding into maximal gauged D=4 supergravity. This enables one to investigate the critical points, mass spectra and gauge…

High Energy Physics - Theory · Physics 2012-05-24 Giuseppe Dibitetto , Adolfo Guarino , Diederik Roest

We study soft supersymmetry breaking terms for anisotropic LARGE volume compactifications, where the bulk volume is set by a fibration with one small four-cycle and one large two-cycle. We consider scenarios where D7s wrap either a blow-up…

High Energy Physics - Theory · Physics 2013-05-20 Stephen Angus , Joseph P. Conlon

We compute the back-reaction of pairs of codimension-two branes within an explicit flux-stabilized compactification, to trace how its properties depend on the parameters that define the brane-bulk couplings. Both brane tension and magnetic…

High Energy Physics - Theory · Physics 2011-04-20 C. P. Burgess , L. van Nierop

We elucidate the structure of D terms in N=1 orientifold compactifications with fluxes. As a case study, we consider a simple orbifold of the type-IIA theory with D6-branes at angles, O6-planes and general NSNS, RR and Scherk-Schwarz…

High Energy Physics - Theory · Physics 2009-11-11 Giovanni Villadoro , Fabio Zwirner

We study N=1 supersymmetric four-dimensional solutions of massive Type IIA supergravity with intersecting D6-branes in the presence NS-NS three-form fluxes. We derive N=1 supersymmetry conditions for the D6-brane and flux configurations in…

High Energy Physics - Theory · Physics 2009-09-17 Klaus Behrndt , Mirjam Cvetic

We supersymmetrize a class of moduli dependent potentials living on branes with the help of additional bulk terms in 5d N=2 supergravity. The space of Poincare invariant vacuum solutions includes the Randall-Sundrum solution and the…

High Energy Physics - Theory · Physics 2009-10-31 Adam Falkowski , Zygmunt Lalak , Stefan Pokorski

We study the gravity dual of several wrapped D-brane configurations in presence of 4-form RR fluxes partially piercing the unwrapped directions. We present a systematic approach to obtain these solutions from those without fluxes. We use…

High Energy Physics - Theory · Physics 2009-11-07 J. D. Edelstein , A. Paredes , A. V. Ramallo

We illustrate the correspondence between the N=1 superstring compactifications with fluxes, the N=4 gauged supergravities and the superpotential and K\"ahler potential of the effective N=1 supergravity in four dimensions. In particular we…

High Energy Physics - Theory · Physics 2010-12-03 J. -P. Derendinger , C. Kounnas , P. M. Petropoulos , F. Zwirner

We study soft supersymmetry breaking in local models of type II string theory compactifications with branes and fluxes. In such models, magnetic fluxes can be treated as auxiliary fields in N=2 SUSY multiplets. These multiplets appear as…

High Energy Physics - Theory · Physics 2014-11-18 Albion Lawrence , John McGreevy

We employ generalized complex geometry to investigate supersymmetric embeddings of D-brane probes in a large class of SU(2) structure manifolds. This class includes the gravity dual of mass deformation and marginal beta deformation of N=4…

High Energy Physics - Theory · Physics 2008-11-26 Alberto Mariotti

We present a five-dimensional supersymmetric SU(5) theory in which the gauge symmetry is broken maximally (i.e. at the 5D Planck scale M_*) on the same 4D brane where chiral matter is localized. Masses of the lightest Kaluza-Klein modes for…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yasunori Nomura , David Smith , Neal Weiner

In this review article we study type IIB superstring compactifications in the presence of space-time filling D-branes while preserving N=1 supersymmetry in the effective four-dimensional theory. This amount of unbroken supersymmetry and the…

High Energy Physics - Theory · Physics 2009-11-11 Hans Jockers

We consider real and complex scalar fields non-minimally coupled to gravity in the bulk spacetime and study their impact on the brane upon acquiring a non-vanishing vacuum expectation value. When examining the case of the complex scalar…

High Energy Physics - Theory · Physics 2008-11-26 Orfeu Bertolami , Carla Carvalho

We consider massive type IIA compactifications down to 4 dimensions in presence of O6 planes and D6 branes parallel to them, in order to preserve half-maximal supersymmetry in 4D. The dynamics of open strings living on the spacetime filling…

We scan the landscape of flux compactifications for the Calabi-Yau manifold $\mathbb{P}^4_{[1,1,1,6,9]}$ with two K\" ahler moduli by varying the value of the flux superpotential $W_0$ over a large range of values. We do not include uplift…

High Energy Physics - Theory · Physics 2009-11-18 Shehu S. AbdusSalam , Joseph P. Conlon , Fernando Quevedo , Kerim Suruliz