Gustafson integrals for spin magnet
arXiv:1612.00727 · doi:10.1088/1751-8121/aa7480
Abstract
It was observed recently that the multidimensional Mellin--Barnes integrals (Gustafson's integrals) arise naturally in studies of the spin chain models. We extend this analysis to the noncompact spin magnets and obtain integrals which generalize Gustafson's integrals to the complex case.
11 pages, 2 figures