Heterotic Brane World

TL;DR

This paper discusses how orbifold compactification of heterotic E8 x E8 string theory can lead to realistic grand unified models, explaining phenomenological properties through geometry and field localization.

Contribution

It highlights the role of orbifold compactification in constructing realistic GUT models and explains phenomenological features via geometric properties.

Findings

Compactification can produce GUT models with desirable features.

Geometry and matter localization influence phenomenological properties.

Provides guidelines for realistic model building.

Abstract

Orbifold compactification of heterotic E8 x E8 string theory is a source for promising grand unified model building. It can accommodate the successful aspects of grand unification while avoiding problems like doublet-triplet splitting in the Higgs sector. Many of the phenomenological properties of the 4-dimensional effective theory find an explanation through the geometry of compact space and the location of matter and Higgs fields. These geometrical properties can be used as a guideline for realistic model building.