4d N=2 SCFT and singularity theory Part III: Rigid singularity
arXiv:1712.00464
Abstract
We classify three fold isolated quotient Gorenstein singularity . These singularities are rigid, i.e. there is no non-trivial deformation, and we conjecture that they define 4d SCFTs which do not have a Coulomb branch.
17 pages, 1 figure