Dark energy, Ricci-nonflat spaces, and the Swampland
arXiv:2005.10075 · doi:10.1016/j.physletb.2021.136199
Abstract
It was recently pointed out that the existence of dark energy imposes highly restrictive constraints on effective field theories that satisfy the Swampland conjectures. We provide a critical confrontation of these constraints with the cosmological framework emerging from the Salam-Sezgin model and its string realization by Cvetic, Gibbons, and Pope. We also discuss the implication of the constraints for string model building.
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