Dark Energy and String Theory
Abstract
A radiatively stable de Sitter spacetime is constructed by considering an intrinsically non-commutative and generalized-geometric formulation of string theory, which is related to a family of F-theory models endowed with non-trivial anisotropic axion-dilaton backgrounds. In particular, the curvature of the canonically conjugate dual space provides for a positive cosmological constant to leading order, that satisfies a radiatively stable see-saw-like formula, which in turn induces the dark energy in the observed spacetime. We also comment on the non-commutative phase of the non-perturbative formulations of string theory/quantum gravity implied by this approach.
Cite
@article{arxiv.1905.08269,
title = {Dark Energy and String Theory},
author = {Per Berglund and Tristan Hübsch and Djordje Minic},
journal= {arXiv preprint arXiv:1905.08269},
year = {2020}
}
Comments
9 pages, text revised throughout the paper, in particular our reinterpretation of Tseytlin's original argument, where we directly relate the intensive action to the cosmological constant, as well as stressing that the models represent effective stringy solutions with an effective world-sheet description that is, to lowest order, doubled and generically non-commutative