Holography of asymmetrically warped space-times

TL;DR

This paper explores the holographic dual of asymmetrically warped AdS space-times, revealing how self-tuning of the cosmological constant involves a hidden CFT and addressing causality concerns via the CFT's perception of the background metric.

Contribution

It provides a novel interpretation of cosmological constant self-tuning through a hidden CFT in asymmetrically warped holographic models.

Findings

Self-tuning of the cosmological constant involves a hidden CFT.

Bulk geodesics' apparent causality violation is explained by the CFT's smeared metric perception.

Holographic duals of asymmetrically warped space-times are characterized.

Abstract

We study the holographic dual of asymmetrically warped space-times, which are asymptotically AdS. The self-tuning of the cosmological constant is reinterpreted as a cancellation of the visible sector stress-energy tensor by the contribution of a hidden CFT, charged under a spontaneously broken global symmetry. The apparent violation of 4D causality due to bulk geodesics is justified by considering that the CFT feels the background metric as smeared out over a length of the order of the AdS radius.