Systematic proof of the existence of Yangian symmetry in chiral Gross-Neveu models
arXiv:hep-th/9708132 · doi:10.1016/S0370-2693(97)01431-7
Abstract
The existence of non-local charges, generating a Yangian symmetry is discussed in generalized chiral Gross-Neveu models. Their conservation can be proven by a finite-loop perturbative computation, the order of which is determined from group theoretic constants and is independent of the number of flavors. Examples, where the 1-loop calculation is sufficient, include the SO(n)-models and other more exotic groups and representations.
12 pages, LaTeX