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We study the large volume limit of the scalar potential in Calabi-Yau flux compactifications of type IIB string theory. Under general circumstances there exists a limit in which the potential… (More)

We propose a new mechanism for obtaining de Sitter vacua in type IIB string theory compactified on (orientifolded) Calabi-Yau manifolds similar to those recently studied by Kachru, Kallosh, Linde and… (More)

We show how the motion through the extra dimensions of a gas of branes and antibranes can, under certain circumstances, produce an era of inflation as seen by observers trapped on a 3-brane, with the… (More)

- Jose J. Blanco-Pillado, Cliff P. Burgess, +5 authors Fernando Quevedo
- 2006

We present a new version of our racetrack inflation scenario which, unlike our original proposal, is based on an explicit compactification of type IIB string theory: the CalabiYau manifold… (More)

- J. F. G. Cascales, M. P. Garćıa del Moral, Fernando Quevedo, Angel M. Uranga
- 2004

We describe the construction of string theory models with semirealistic spectrum in a sector of (anti) D3-branes located at an orbifold singularity at the bottom of a highly warped throat geometry,… (More)

- Michele Cicoli, Joseph P. Conlon, Fernando Quevedo
- 2005

We study the behaviour of the string loop corrections to the N = 1 4D supergravity Kähler potential that occur in flux compactifications of IIB string theory on general Calabi-Yau three-folds. We… (More)

We study the spectrum, couplings and cosmological and astrophysical implications of the moduli fields for the class of Calabi-Yau IIB string compactifications for which moduli stabilisation leads to… (More)

We study the different phases of field theories of compact antisymmetric tensors of rank h − 1 in arbitrary space-time dimensions D = d + 1. Starting in a ‘Coulomb’ phase, topological defects of… (More)

- Xenia C. de la Ossa, Fernando Quevedo
- 1993

In string theory it is known that abelian isometries in the σ–model lead to target space duality. We generalize this duality to backgrounds with non–abelian isometries. The procedure we follow… (More)

- G. Aldazabal, L. E. Ibáñez, Fernando Quevedo, Angel M. Uranga
- 2000

G. Aldazabal, L. E. Ibáñez, F. Quevedo and A. M. Uranga 1 Instituto Balseiro, CNEA, Centro Atómico Bariloche, 8400 S.C. de Bariloche, and CONICET, Argentina. 2 Departamento de F́ısica Teórica C-XI… (More)