The enhancon mechanism for fractional branes

TL;DR

This paper investigates how the enhancon mechanism resolves singularities caused by fractional D-branes in conifold and orbifold backgrounds, highlighting the importance of the interior space and boundary state formalism.

Contribution

It demonstrates the resolution of repulson singularities via the enhancon mechanism and provides an explicit conformal description using boundary state formalism.

Findings

Enhancon mechanism effectively resolves singularities in fractional brane geometries.

Interior space must be non-empty for consistent excision.

Explicit conformal description obtained through boundary state formalism.

Abstract

We study the enhancon mechanism for fractional D-branes in conifold and orbifold backgrounds and show how it can resolve the repulson singularity of these geometries. In particular we show that the consistency of the excision process requires that the interior space be not empty. In the orbifold case, we exploit the boundary state formalism to obtain an explicit conformal description and emphasize the non trivial role of the volume of the internal manifold.