Randall-Sundrum Models and Holography

TL;DR

This thesis explores the Randall-Sundrum RSI model, its holographic dual, and how it explains Standard Model hierarchies, introducing a new 5d bulk interpretation of the Nelson-Strassler mechanism.

Contribution

It provides a detailed analysis of the RSI model's geometric and phenomenological features, including a novel 5d bulk interpretation of Yukawa hierarchy generation.

Findings

Mode expansions and boundary terms analyzed

Standard Model-like constructions discussed

New 5d bulk interpretation of Nelson-Strassler mechanism introduced

Abstract

This Master's thesis will introduce the Randall-Sundrum RSI model and overview its general features and basic phenomenology, with the goal of understanding its 5-dimensional geometric structure in terms of its 4-dimensional AdS/CFT dual theory. We discuss mode expansions, boundary terms, field content, and supersymmetry, leading up to a discussion of the AdS/CFT correspondence in RSI models. Low-energy 4d Yukawa hierarchies and gauge couplings are understood in terms of the bulk 5d theory. A few simple Standard Model and MSSM-like constructions are considered, and their 4d dual theories are discussed. One new result is presented: the 5d bulk interpretation of the Nelson-Strassler mechanism of generating Yukawa hierarchies through renormalization group flow.