ICTP Lectures on Large Extra Dimensions

TL;DR

This paper introduces various braneworld models with large extra dimensions, explaining their concepts and discussing an application to late-time cosmology and the universe's acceleration.

Contribution

It provides an elementary overview of three distinct large extra dimension scenarios and explores their implications for cosmology, especially the acceleration of the universe.

Findings

Large extra dimensions can influence cosmological acceleration

Different models offer varied approaches to extra dimensions

Application of infinite-volume models to late-time cosmology

Abstract

I give a brief and elementary introduction to braneworld models with large extra dimensions. Three conceptually distinct scenarios are outlined: (i) Large compact extra dimensions; (ii) Warped extra dimensions; (iii) Infinite-volume extra dimensions. As an example I discuss in detail an application of (iii) to late-time cosmology and the acceleration problem of the Universe.