Massless Xxz Model and Degeneration of The
نویسندگان
چکیده
We consider an algebraic structure of the XXZ model in the gapless regime. We argue that a certain degeneration limit of the elliptic algebra A q;p ( c sl 2 ) [5] is a relevant object. We give a free boson realization of this limiting algebra and derive an integral formula for the correlation function. The result agrees with the one obtained by solving a system of di erence equations. We also discuss the relation of our algebra to the deformed Virasoro algebra and Lukyanov's bosonization of the sine-Gordon theory.
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تاریخ انتشار 1996