Folding identical legs of a simply-laced quiver creates a quiver with a non-simply laced edge. So far, this has been explored for quivers containing unitary gauge groups. In this paper, orthosymplectic quivers are folded, giving rise to a new family of quivers. This is realised by intersecting orientifolds in the brane system. The monopole formula for these non-simply laced orthosymplectic quivers is introduced. Some of the folded quivers have Coulomb branches that are closures of minimal nilpotent orbits of exceptional algebras, thus providing a new construction of these fundamental moduli spaces. Moreover, a general family of folded orthosymplectic quivers is shown to be a new magnetic quiver realisation of Higgs branches of 4d N=2 theories. The Hasse (phase) diagrams of certain families are derived via quiver subtraction as well as Kraft-Procesi transitions in the brane system.
@article{arxiv.2107.00754,
title = {Folding Orthosymplectic Quivers},
author = {Antoine Bourget and Julius F. Grimminger and Amihay Hanany and Rudolph Kalveks and Marcus Sperling and Zhenghao Zhong},
journal= {arXiv preprint arXiv:2107.00754},
year = {2023}
}