Nonperturbative de Sitter vacua via α′ corrections
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© 2019 World Scientific Publishing Company. The higher-derivative α′ corrections consistent with O(d,d) duality invariance can be completely classified for cosmological, purely time-dependent backgrounds. This result is used to show that there are duality invariant theories featuring string-frame de Sitter vacua as solutions that are nonperturbative in α′, thus suggesting that classical string theory may realize de Sitter solutions in an unexpected fashion.
Date issued
2019Department
Massachusetts Institute of Technology. Center for Theoretical PhysicsJournal
International Journal of Modern Physics D [Gravitation; Astrophysics and Cosmology]
Publisher
World Scientific Pub Co Pte Lt