5d Higgs Branches from M-theory on quasi-homogeneous cDV threefold singularities

TL;DR

This paper classifies rank zero 5d SCFTs derived from M-theory on specific threefold singularities, detailing their Higgs Branch properties and symmetries using a novel gauge-theoretic approach.

Contribution

It introduces a new gauge-theoretic method to analyze Higgs Branches of 5d SCFTs from complex geometries, including construction of T-brane backgrounds.

Findings

Computed Higgs Branch dimensions and symmetries for all classified theories.

Established a correspondence between adjoint Higgs fields and M-theory geometries.

Constructed multiple T-brane backgrounds with distinct spectra for the same geometry.

Abstract

We classify rank zero 5d SCFTs geometrically engineered from M-theory on quasi-homogeneous compound Du Val isolated threefold singularities. For all such theories, we characterize the Higgs Branch, by computing the dimension, the continuous and discrete symmetry groups, as well as more refined details such as the charges of the hypermultiplets under these groups. We derive these data by means of a gauge-theoretic method, that we have recently introduced, based on establishing a correspondence between an adjoint Higgs field and the M-theory geometry. As a byproduct, this further allows us to construct several T-brane backgrounds, that yield inequivalent 5d spectra but are associated with the same geometry.