The BPS Spectrum of N=2 SU(N) SYM and Parton Branes

TL;DR

This paper uses D-brane ideas to derive the BPS spectrum of N=2 SU(N) SYM, identifying fractional branes as partons and analyzing stability lines near an orbifold point.

Contribution

It introduces a novel approach applying D-brane concepts to compute the BPS spectrum of N=2 SU(N) SYM, including fractional branes and stability analysis.

Findings

Derived the BPS spectrum near an orbifold point.

Identified fractional branes as partons of the spectrum.

Compared results with known field theory spectra.

Abstract

We apply ideas that have appeared in the study of D-branes on Calabi-Yau compactifications to the derivation of the BPS spectrum of field theories. In particular, we identify an orbifold point whose fractional branes can be thought of as ``partons'' of the BPS spectrum of N=2 pure SU(N) SYM. We derive the BPS spectrum and lines of marginal stability branes near that orbifold, and compare our results with the spectrum of the field theories.