A Yangian is a certain quantum group that arises naturally in integrable systems in quantum field theory.
Wikipedia, Yangian
N. J. Mackay, Introduction to Yangian symmetry in integrable field theory (arXiv:hep-th/0409183)
Vassili Gorbounov, R. Rimanyi, V. Tarasov, A. Varchenko, Cohomology of the cotangent bundle of a flag variety as a Yangian Bethe algebra (arXiv:1204.5138)
In
is discussed that the holomorphically twisted N=1 D=4 super Yang-Mills theory is controled by the Yangian in analogy to how Chern-Simons theory is controled by a quantum group.