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q-Difference Realization of U_q(sl(M|N)) and Its Application to Free Boson Realization of U_q(\widehat{sl}(2|1))

We present a q-difference realization of the quantum superalgebra U_q(sl(M|N)), which includes Grassmann even and odd coordinates and their derivatives. Based on this result we obtain a free boson realization of the quantum affine superalgebra U_q(\widehat{sl}(2|1)) of an arbitrary level k.

preprint1997arXivOpen access
H. AwataS. OdakeJ. Shiraishi
q-algmath.QA
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H. AwataS. OdakeJ. Shiraishi

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