On the Quasi-Hopf structure of deformed double Yangians
D. Arnaudon, J. Avan, L. Frappat, E. Ragoucy, M. Rossi
Abstract
We construct universal twists connecting the centrally extended double Yangian DY(sl(2))c with deformed double Yangians DYr(sl(2))c, thereby establishing the quasi-Hopf structures of the latter.
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