1. Quadratic curvature corrections to stringy effective actions and the absence of de Sitter vacua
- Author
-
Francesc Cunillera, William T. Emond, Antoine Lehébel, and Antonio Padilla
- Subjects
High Energy Physics - Theory ,Nuclear and High Energy Physics ,FOS: Physical sciences ,Effective Field Theories ,Field Theories in Higher Dimensions ,Flux Compactifications ,General Relativity and Quantum Cosmology (gr-qc) ,QC770-798 ,General Relativity and Quantum Cosmology ,High Energy Physics::Theory ,High Energy Physics - Theory (hep-th) ,Nuclear and particle physics. Atomic energy. Radioactivity ,Mathematics::Differential Geometry - Abstract
We investigate the combined effect of fluxes and higher-order curvature corrections, in the form of the Gauss-Bonnet term, on the existence of de Sitter vacua in a heterotic string inspired framework, compactified on spheres and tori. We first gain some intuition on the effects of these corrections by studying a perturbative expansion in the small Gauss-Bonnet coupling. Then, for choices of potential closer to the string theory predictions, we show that the inclusion of quadratic curvature corrections actually reduces the parametric likelihood of de Sitter solutions., Comment: 18 pages, formatted using JHEP style package
- Published
- 2022