On a classical limit of q-deformed Whittaker functions

Anton Gerasimov, Dimitri Lebedev, Sergey Oblezin

We provide a derivation of the Givental integral representation of the classical $g{l}_{\ell +1}$-Whittaker function as a limit $q\to 1$ of the q-deformed $g{l}_{\ell +1}$-Whittaker fun…