Higher spin sl_2 R-matrix from equivariant (co)homology

Dmitri Bykov, Paul Zinn-Justin

We compute the rational ${\mathfrak{sl}}_2$ $R$-matrix acting in the product of two spin-$\frac{\ell }{2}$ ($\ell \in \mathbb{N}$) representations, using a method analogous to the one…