Shuffle algebras and their integral forms: specialization map approach in types $B_n$ and $G_2$

Abstract

We construct a family of PBWD bases for the positive subalgebras of quantum loop algebras of type $B_n$ and $G_2$, as well as their Lusztig and RTT (for type $B_n$ only) integral forms, in the new Drinfeld realization. We also establish a shuffle algebra realization of these $\mathbb{Q}(v)$-algebras (proved earlier in arXiv:2102.11269 by completely different tools) and generalize the latter to the above $\mathbb{Z}[v,v^{-1}]$-forms. The rational counterparts provide shuffle algebra realizations of positive subalgebras of type $B_n$ and $G_2$ Yangians and their Drinfeld-Gavarini duals. All of this generalizes the type $A_n$ results of arXiv:1808.09536 by the second author.

This is a majorly corrected version of arXiv:2206.12806 by the first author, with a new generalization to integral forms and Yangian counterparts. v1: 46 pages, comments are welcome! v2: 47 pages, minor corrections, details added

References in corpus (1)

• Shuffle approach towards quantum affine and toroidal algebras

Cited by in corpus (2)

• Fusion and specialization for type ADE shuffle algebras
• Shuffle algebras and their integral forms: specialization map approach in types $C_n$ and $D_n$