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Dark energy, extra dimensions, and the Swampland

Author(s): Montefalcone, Gabriele; Steinhardt, Paul J; Wesley, Daniel H

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Abstract: Perhaps the greatest challenge for fundamental theories based on compactification from extra dimensions is accommodating a period of accelerated cosmological expansion. Previous studies have identified constraints imposed by the existence of dark energy for two overlapping classes of compactified theories: (1) those in which the higher dimensional picture satisfies certain metric properties selected to reproduce known low energy phenomenology; or (2) those derived from string theory assuming they satisfy the Swampland conjectures. For either class, the analyses showed that dark energy is only possible if it takes the form of quintessence. In this paper, we explore the consequences for theories that belong to both classes and show that the joint constraints are highly restrictive, leaving few options.
Publication Date: 15-Jun-2020
Citation: Montefalcone, Gabriele, Steinhardt, Paul J, Wesley, Daniel H. (2020). Dark energy, extra dimensions, and the Swampland. Journal of High Energy Physics, 2020 (6), 10.1007/jhep06(2020)091
DOI: doi:10.1007/jhep06(2020)091
EISSN: 1029-8479
Language: en
Type of Material: Journal Article
Journal/Proceeding Title: Journal of High Energy Physics
Version: Final published version. This is an open access article.

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