Weyl Mutations in Quiver Yangians

TL;DR

This paper explores Weyl mutations in quiver Yangians, revealing how these transformations act on ADHM solutions, quiver gauge theories, and BPS Yangian algebras, providing a systematic approach to generating new solutions and understanding dualities.

Contribution

It introduces Weyl mutations as a systematic method to transform ADHM solutions and quiver gauge theories, extending the understanding of dualities in quiver Yangians for Lie algebra sl_{n+1}.

Findings

Weyl mutations act as dualities on quiver gauge theories.

The approach generalizes Weyl group actions to higher representations.

Weyl mutations influence the structure of BPS Yangian algebras.

Abstract

The problem of solving non-linear equations would be considerably simplified by a possibility to convert known solutions into the new ones. This could seem an element of art, but in the context of ADHM-like equations describing quiver varieties there is a systematic approach. In this note we study moduli spaces and dualities of quiver gauge theories associated to effective dynamics of D-branes compactified on Calabi-Yau resolutions. We concentrate on a subfamily of quivers $\mathfrak{Q}_{\mathfrak{g}}$ covering Dynkin diagrams for simple Lie algebras $\mathfrak{g}$, where the respective BPS algebra is expected to be the Yangian algebra $Y(\mathfrak{g})$. For Yangians labeled by quivers their representations are described by solutions of ADHM-like equations. As quivers substitute Dynkin diagrams a generalization of the Weyl group $\mathcal{W}_{\mathfrak{g}}$ acts on the ADHM solutions. Here we work with the case $\mathfrak{g}=\mathfrak{sl}_{n+1}$ and treat this group as a group of electro-magnetic Seiberg-like dualities (we call them Weyl mutations) on the respective quiver gauge theories. We lift it to the case of higher representations associated to rectangular Young diagrams. An action of Weyl mutations on the BPS Yangian algebra is also discussed.