Warped Compactification with a Four-Brane

TL;DR

This paper presents a model of warped compactification in six dimensions with a 4-brane and abelian gauge theory, achieving a zero cosmological constant without fine-tuning, contrasting with models with positive cosmological constant.

Contribution

It introduces a warped compactification scenario with a negative cosmological constant that naturally results in a vanishing four-dimensional cosmological constant without fine-tuning.

Findings

Achieves zero cosmological constant without fine-tuning.

Utilizes a 4-brane with abelian gauge theory in six dimensions.

Contrasts with models requiring fine-tuning for positive cosmological constant.

Abstract

Warped compactification of the six-dimensional bulk with a negative cosmological constant is realized with a 4-brane along with an abelian gauge theory. No fine tuning of couplings are needed to obtain the vanishing cosmological constant in four dimensions, as is the case for the bulk with a positive cosmological constant.