SUSY GUT Model Building

TL;DR

This paper reviews the development of supersymmetric grand unified theories (GUTs), from four-dimensional models to string-based orbifold GUTs, aiming to create realistic models potentially testable at the LHC.

Contribution

It provides a comprehensive overview of the evolution of SUSY GUT model building, highlighting the transition to string-inspired orbifold GUTs for realistic model construction.

Findings

Progression from 4d GUTs to orbifold GUTs within string theory

Potential relevance of these models for LHC experiments

Historical perspective on SUSY GUT development

Abstract

I discuss an evolution of SUSY GUT model building, starting with the construction of 4d GUTs, to orbifold GUTs and finally to orbifold GUTs within the heterotic string. This evolution is an attempt to obtain realistic string models, perhaps relevant for the LHC. This review is in memory of the sudden loss of Julius Wess, a leader in the field, who will be sorely missed.