Canonicity of Baecklund transformation: r-matrix approach. I
classification
solv-int
nlin.SI
keywords
r-matrixbaecklundbracketpoissontransformationapproachcalculationcanonicity
read the original abstract
For the Hamiltonian integrable systems governed by SL(2)-invariant r-matrix (such as Heisenberg magnet, Toda lattice, nonlinear Schroedinger equation) a general procedure for constructing Baecklund transformation is proposed. The corresponding BT is shown to preserve the Poisson bracket. The proof is given by a direct calculation using the r-matrix expression for the Poisson bracket.
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