Probing the Enhancon via Calculations in Supersymmetric Gauge Theory

TL;DR

This paper investigates the enhancon mechanism in N=2 gauge theories using D-brane probes and Seiberg-Witten formalism, confirming the flat interior region and demonstrating the mechanism's robustness beyond supergravity approximations.

Contribution

It provides a detailed analysis of the enhancon structure in supersymmetric gauge theories with D-branes, extending understanding beyond supergravity patching methods.

Findings

D3-brane probes are consistent with a flat interior region.

The enhancon mechanism remains robust beyond supergravity solutions.

Results support the validity of the enhancon picture in large N limit.

Abstract

We consider the N=2 gauge theory on N D7-branes wrapping K3, with D3-brane probes. In the large N limit, the D7-branes blow up to form an enhancon shell. We probe the region inside and outside the enhancon shell using the D3-branes, and compute the probe metric using the Seiberg-Witten formalism. Supergravity arguments suggest a flat interior up to 1/N corrections, and indeed our results for the D3-brane probes are consistent with that. By including the dynamics of the branes, these results, together with those of hep-th/0204050, demonstrate the robustness of the enhancon mechanism beyond patching together of supergravity solutions with D-brane source junction conditions.