Dark Energy, Extra Dimensions, and the Swampland

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.

12 pages, 3 figures

References in corpus (5)

• On the Geometry of the String Landscape and the Swampland
• The Swampland: Introduction and Review
• Dark Energy, Inflation and Extra Dimensions
• Oxidised cosmic acceleration
• Exploring extra dimensions through observational tests of dark energy and varying Newton's constant

Cited by in corpus (5)

• The Swampland Conjectures and Slow-Roll Thawing Quintessence
• A Higher Dimensional Cosmological Model for the Search of Dark Energy Source
• Trans-Planckian censorship constraints on properties and cosmological applications of axion-like fields
• MSSM WIMPs-nucleon cross section for E${}_{\chi }<$ 500 GeV
• Cosmic acceleration from string induced Galileons