Analytic Bethe ansatz for fundamental representations of Yangians |
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Authors: | Atsuo Kuniba Junji Suzuki |
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Institution: | (1) Institute of Physics, University of Tokyo, Komaba, 3-8-1, Meguro-ku, 153 Tokyo, Japan |
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Abstract: | We study the analytic Bethe, ansatz in solvable vertex models associated with the YangianY(X
r
) or its quantum affine analogueU
q
(X
r
(1)
) forX
r
=B
r
,C
r
andD
r
. Eigenvalue formulas are proposed for the transfer matrices related to all the fundamental representations ofY(X
r
). Under the Bethe ansatz equation, we explicitly prove that they are pole-free, a crucial property in the ansatz. Conjectures are also given on higher representation cases by applying theT-system, the transfer matrix functional relations proposed recently. The eigenvalues are neatly described in terms of Yangian analogues of the semi-standard Young tableaux. |
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Keywords: | |
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