Universal R-matrix for esoteric quantum group

Abstract

The universal $R$-matrix for a class of esoteric (non-standard) quantum groups ${\cal U}_q(gl(2N+1))$ is constructed as a twisting of the universal $R$-matrix ${\cal R}_S$ of the Drinfeld-Jimbo quantum algebras. The main part of the twisting element ${\cal F}$ is chosen to be the canonical element of appropriate pair of separated Hopf subalgebras (quantized Borel's ${\cal B}(N) \subset {\cal U}_q(gl(2N+1))$), providing the factorization property of ${\cal F}$. As a result, the esoteric quantum group generators can be expressed in terms of the Drinfeld-Jimbo ones.