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math-ph2016★ 9 cited
Gustafson integrals for spin magnet
S. E. Derkachov, A. N. Manashov, P. A. Valinevich
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 an…
math-ph2016★ 7 cited
Spin Chains and Gustafson's Integrals
S. E. Derkachov, A. N. Manashov
Gustafson's integrals are multidimensional generalizations of the classical Mellin-Barnes integrals. We show that some of these integrals arise from relations between matrix elemen…