Intersecting brane models and F-theory in six dimensions

TL;DR

This paper explores six-dimensional supergravity theories derived from intersecting brane models on a toroidal orbifold, using F-theory to gain new insights into matter spectra and gauge enhancements.

Contribution

It establishes dualities between intersecting brane models and F-theory in 6D, providing new understanding of matter spectra and gauge group enhancements.

Findings

Identified F-theory duals for intersecting brane models.

Gained new insights into matter spectrum on intersecting branes.

Analyzed gauge group enhancement near orbifold points.

Abstract

We analyze six-dimensional supergravity theories coming from intersecting brane models on the toroidal orbifold T^4/Z_2. We use recently developed tools for mapping general 6D supergravity theories to F-theory to identify F-theory constructions dual to the intersecting brane models. The F-theory picture illuminates several aspects of these models. In particular, we have some new insight into the matter spectrum on intersecting branes, and analyze gauge group enhancement as branes approach orbifold points. These novel features of intersecting brane models are also relevant in four dimensions, and are confirmed in 6D using more standard Chan-Paton methods.