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[en] The quantum nonlinear Schroedinger model with four-component fermions exhibits a Y(so(5)) symmetry when considered on an infinite interval. The constructed generators of the Yangian are proved to satisfy the Drinfel'd formula and, furthermore, the RTT relation with the general form of a rational R-matrix given by Yang-Baxterization associated with so(5) algebraic structure. (author)
Journal
Journal of Physics. A, Mathematical and General; ISSN 0305-4470; 
; v. 34(4); p. 919-928
; v. 34(4); p. 919-928