Quadratic curvature corrections to stringy effective actions and the absence of de Sitter vacua

Cunillera, Francesc; Emond, William T; Lehébel, Antoine; Padilla, Antonio

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.

• Journal Article Type: Article
• Acceptance Date: Jan 22, 2022
• Online Publication Date: Feb 2, 2022
• Publication Date: Feb 2, 2022
• Deposit Date: Feb 2, 2022
• Publicly Available Date: Feb 2, 2022
• Journal: Journal of High Energy Physics
• Electronic ISSN: 1029-8479
• Publisher: Springer Science and Business Media LLC
• Peer Reviewed: Peer Reviewed
• Volume: 2022
• Issue: 2
• Article Number: 12
• DOI: https://doi.org/10.1007/jhep02%282022%29012
• Keywords: Nuclear and High Energy Physics
• Public URL: https://nottingham-repository.worktribe.com/output/7373170
• Publisher URL: https://link.springer.com/article/10.1007/JHEP02%282022%29012