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Quantum affine algebras
Authors:Vyjayanthi Chari  Andrew Pressley
Affiliation:(1) School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, 5 Bombay, India;(2) Department of Mathematics, King's College, Strand, WC2R 2LS London, England, UK
Abstract:We classify the finite-dimensional irreducible representations of the quantum affine algebra
$$U_q (hat sl_2 )$$
in terms of highest weights (this result has a straightforward generalization for arbitrary quantum affine algebras). We also give an explicit construction of all such representations by means of an evaluation homomorphism
$$U_q (hat sl_2 ) to U_q (sl_2 )$$
, first introduced by M. Jimbo. This is used to compute the trigonometricR-matrices associated to finite-dimensional representations of
$$U_q (hat sl_2 )$$
.
Keywords:
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