Dark Energy, Extra Dimensions, and the Swampland

Autor:	Montefalcone, Gabriele, Steinhardt, Paul J., Wesley, Daniel H.
Rok vydání:	2020
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj:	J. High Energ. Phys. 91 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP06(2020)091
Popis:	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. Comment: 12 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2005.01143 Zobrazit plný text záznamu View this record from Arxiv