Models of AdS_2 Backreaction and Holography

TL;DR

This paper develops 1+1D dilaton gravity models to study backreaction effects on holographic correlators in AdS_2, revealing their significance at low energies and including matter loop effects.

Contribution

It introduces models of AdS_2 backreaction from higher dimensions and analyzes their impact on holographic correlators and matter loop effects.

Findings

Backreaction scales as a relevant low-energy effect.

Matter loops influence holographic correlators.

Models connect higher-dimensional AdS to AdS_2 dynamics.

Abstract

We develop models of 1+1 dimensional dilaton gravity describing flows to $AdS_2$ from higher dimensional $AdS$ and other spaces. We use these to study the effects of backreaction on holographic correlators. We show that this scales as a relevant effect at low energies, for compact transverse spaces. We also discuss effects of matter loops, as in the CGHS model.