2008/02/29 by Keshav Dasgupta, Paul Franche, Anke Knauf +1 · 26 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Brane cosmology #Conifold #Cosmology and Gravitation Theories #Embedding #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflaton #Manifold (fluid mechanics) #Mathematical physics #Physics #Supersymmetry #Supersymmetry breaking #Theoretical physics #hep-th
paper · pdf · doi:10.1088/1126-6708/2009/04/027
published in Journal of High Energy Physics 2009(04), 027 (Springer Nature) · 55 pages, Latex, no figures; v2: Typos corrected and references added; v3: a comment and references added, and typos corrected. Final version to appear in JHEP
arxiv created 2009/03/13 · openalex publication_date 2009/04/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We derive a novel deformation of the warped resolved conifold background with supersymmetry breaking ISD (1,2) fluxes by adding D7-branes to this type IIB theory. We find spontaneous supersymmetry breaking without generating a bulk cosmological constant. In the compactified form, our background will no longer be a Calabi-Yau manifold as it allows a non-vanishing first Chern class. In the presence of D7-branes the (1,2) fluxes can give rise to non-trivial D-terms. We study the Ouyang embedding of D7-branes in detail and find that in this case the D-terms are indeed non-zero. In the limit when we approach the singular conifold, the D-terms vanish for Ouyang's embedding, although supersymmetry appears to be broken. We also construct the F-theory lift of our background and demonstrate how these IIB (1,2) fluxes lift to non-primitive (2,2) flux on the fourfold. The seven branes correspond to normalisable harmonic forms. We briefly sketch a possible way to attain an inflaton potential in this background once extra D3-branes are introduced and point out some possibilities of restoring supersymmetry in our background that could in principle be used as the end point of the inflationary set-up. In a companion paper we will analyse in details the inflationary dynamics in this background.