Warped compactifications and holographic duality

TL;DR

This paper reviews warped compactifications in superstring theory, focusing on their holographic duals and generalizations beyond the standard AdS5 x S5 setup, highlighting developments in the field.

Contribution

It provides a comprehensive overview of warped compactifications and their holographic duals, including generalizations beyond the classic AdS5 x S5 model.

Findings

Discussion of Klebanov-Witten and Klebanov-Strassler models

Overview of geometric generalizations in warped compactifications

Illustration of the evolution of holographic duality models

Abstract

We review warped compactifications of superstring theory with some attention to the limit in which these resemble "bottom-up" phenomenological models. In addition to some discussion of the original Klebanov-Witten and Klebanov-Strassler set-ups, we also touch on various generalizations of the geometry that have been considered. Various other systems with a holographic duality are also briefly reviewed. The point of this latter exploration is to illustrate how far beyond the standard AdS(5) x S(5) set-up things have moved over the years.