On trigonometric intertwining vectors and nondynamical R matrix for the Ruijsenaars model

Apr, 1997
24 pages
Published in:
  • Nucl.Phys.B 503 (1997) 747-770
e-Print:
Report number:
  • PAR-LPTHE-97-09

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Abstract:
We elaborate the trigonometric version of intertwining vectors and factorized L-operators. The starting point is the corresponding elliptic construction with Belavin's R-matrix. The naive trigonometric limit is singular and a careful analysis is needed. It is shown that the construction admits several different trigonometric degenerations. As a by-product, a quantum Lax operator for the trigonometric Ruijsenaars model intertwined by a non-dynamical R-matrix is obtained. The latter differs from the standard trigonometric R-matrix of AnA_n type. A connection with the dynamical R-matrix approach is discussed.
Note:
  • 20 pages, LaTeX Report-no: LPTHE 97-09
  • 11.10.-z
  • Trigonometric Ruijsenaars model
  • Vertex-face correspondence
  • Quantum L-operator