Elliptic deformation of $\mathcal{W}_N$-algebras (1810.11410v2)

Abstract: We construct $q$-deformations of quantum $\mathcal{W}N$ algebras with elliptic structure functions. Their spin $k+1$ generators are built from $2k$ products of the Lax matrix generators of ${\mathcal{A}{q,p}(\widehat{gl}(N)c)}$). The closure of the algebras is insured by a critical surface condition relating the parameters $p,q$ and the central charge $c$. Further abelianity conditions are determined, either as $c=-N$ or as a second condition on $p,q,c$. When abelianity is achieved, a Poisson bracket can be defined, that we determine explicitly. One connects these structures with previously built classical $q$-deformed $\mathcal{W}_N$ algebras and quantum $\mathcal{W}{q,p}(\mathfrak{sl}_N)$.