A Comment on the Spectrum of H-Monopoles

TL;DR

This paper investigates the ground states of a supersymmetric system related to H-monopoles, identifying missing states predicted by S-duality in heterotic string theory through effective theory analysis.

Contribution

It provides new insights into the spectrum of H-monopoles by analyzing effective theories near singularities, confirming the existence of predicted BPS states.

Findings

Identified the remaining BPS states consistent with S-duality.

Analyzed the effective theory near singularities in the five-brane moduli space.

Supported the conjectured spectrum of H-monopoles in heterotic string theory.

Abstract

We consider the question of ground states in the supersymmetric system that arises in the search for the missing H-monopole states. By studying the effective theory near certain singularities in the five-brane moduli space, we find the remaining BPS states required by the conjectured S-duality of the toroidally compactified heterotic string.