de Sitter String Vacua from Supersymmetric D-terms
Abstract
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 Trivedi (KKLT). dS vacuum appears in KKLT model after uplifting an AdS vacuum by adding an anti-D3-brane, which explicitly breaks supersymmetry. We accomplish the same goal by adding fluxes of gauge fields within the D7-branes, which induce a D-term potential in the effective 4D action. In this way we obtain dS space as a spontaneously broken vacuum from a purely supersymmetric 4D action. We argue that our approach can be directly extended to heterotic string vacua, with the dilaton potential obtained from a combination of gaugino condensation and the D-terms generated by anomalous U(1) gauge groups.
Cite
@article{arxiv.hep-th/0309187,
title = {de Sitter String Vacua from Supersymmetric D-terms},
author = {C. P. Burgess and R. Kallosh and F. Quevedo},
journal= {arXiv preprint arXiv:hep-th/0309187},
year = {2009}
}
Comments
17 pages, 1 figure