Looking At The Cosmological Constant From Infinite--Volume Bulk

TL;DR

This paper reviews how braneworld models with infinite-volume extra dimensions might address the cosmological constant problem, highlighting their properties and the need for further investigation to confirm their effectiveness.

Contribution

It provides a detailed review of infinite-volume braneworld models and discusses the potential they hold for solving the cosmological constant problem, including areas requiring further research.

Findings

Models can evade Weinberg's no-go theorem

Properties of these models are well-established

Further studies needed to confirm solutions

Abstract

I briefly review the arguments why the braneworld models with infinite-volume extra dimensions could solve the cosmological constant problem, evading Weinberg's no-go theorem. Then I discuss in detail the established properties of these models, as well as the features which should be studied further in order to conclude whether these models can truly solve the problem. This article is dedicated to the memory of Ian Kogan.