Quantum Corrections and the de Sitter Swampland Conjecture



Dasgupta, Keshav, Emelin, Maxim, McDonough, Evan and Tatar, R
(2019) Quantum Corrections and the de Sitter Swampland Conjecture. The Journal of High Energy Physics, 2019.

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Abstract

Recently a swampland criterion has been proposed that rules out de Sitter vacua in string theory. Such a criterion should hold at all points in the field space and especially at points where the system is on-shell. However there has not been any attempt to examine the swampland criterion against explicit equations of motion. In this paper we study four-dimensional de Sitter and quasi-de Sitter solutions using dimensionally reduced M-theory that includes quantum corrections. These quantum corrections are found to allow for de Sitter solutions provided certain constraints are satisfied. A careful study however shows that generically such a constrained system does not allow for an effective field theory description in four-dimensions. Nevertheless, if some hierarchies between the various quantum pieces could be found, certain solutions with an effective field theory description might exist. Such hierarchies appear once some mild time dependence is switched on, in which case certain quasi-de Sitter solutions may be found without a violation of the swampland criterion.

Item Type: Article
Uncontrolled Keywords: Flux compactifications, M-theory, Superstring vacuaa
Depositing User: Symplectic Admin
Date Deposited: 06 Dec 2018 14:57
Last Modified: 09 Jan 2021 04:32
DOI: 10.1007/JHEP01(2019)145
Open Access URL: https://doi.org/10.1007/JHEP01(2019)145
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3029641