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.

arXiv comment12 pages, 3 figures

References in corpus (21)

• A Large Mass Hierarchy from a Small Extra Dimension
• An Alternative to Compactification
• Cosmological Imprint of an Energy Component with General Equation of State
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Hierarchies from Fluxes in String Compactifications
• Heterotic and Type I String Dynamics from Eleven Dimensions
• Supergravity and a Confining Gauge Theory: Duality Cascades and $\chi$SB-Resolution of Naked Singularities
• On the Geometry of the String Landscape and the Swampland
• The Swampland: Introduction and Review
• Distance and de Sitter Conjectures on the Swampland
• On the Cosmological Implications of the String Swampland
• Bounds on Slow Roll and the de Sitter Swampland
• Infinite Distances in Field Space and Massless Towers of States
• Emergence and the Swampland Conjectures
• Constraining de Sitter Space in String Theory
• Improved BBN Constraints on the Variation of the Gravitational Constant
• Dark Energy, Inflation and Extra Dimensions
• Constraints on String Cosmology
• Large Field Inflation/Quintessence and the Refined Swampland Distance Conjecture
• Oxidised cosmic acceleration
• Exploring extra dimensions through observational tests of dark energy and varying Newton's constant

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• Dark energy, Ricci-nonflat spaces, and the Swampland
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• The inheritance of energy conditions: Revisiting no-go theorems in string compactifications
• Late time acceleration in Palatini gravity
• Features of a dark energy model in string theory
• A Higher Dimensional Cosmological Model for the Search of Dark Energy Source
• Novel modulus stabilization mechanism in higher dimensional f(R) Gravity
• Deriving the Gibbons-Maldacena-Nunez no-go theorem from the Raychaudhuri equation
• Dark energy effects on realistic neutron stars
• Trans-Planckian censorship constraints on properties and cosmological applications of axion-like fields
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• MSSM WIMPs-nucleon cross section for E${}_{\chi }<$ 500 GeV
• Time Dependent String Compactification: Towards Bouncing Cosmology
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