Geometric Construction of Highest Weight Crystals for Quantum Generalized Kac-Moody Algebras
arXiv:0908.1158
Abstract
We present a geometric construction of highest weight crystals for quantum generalized Kac-Moody algebras. It is given in terms of the irreducible components of certain Lagrangian subvarieties of Nakajima's quiver varieties associated to quivers with edge loops.
17 pages, Latex