On Bäcklund transformations for many-body systems
On Bäcklund transformations for many-body systems
复制标题
多体系统的贝克伦德变换
DOI:
10.1088/0305-4470/31/9/012
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发表时间:
1997
期刊:
影响因子:
--
通讯作者:
E. K. Sklyanin
中科院分区:
文献类型:
--
作者:
V. B. Kuznetsov;E. K. Sklyanin
Using the n-particle periodic Toda lattice and the relativistic generalization due to Ruijsenaars of the elliptic Calogero-Moser system as examples, we revise the basic properties of the Backlund transformations (BT's) from the Hamiltonian point of view. The analogy between BT and Baxter's quantum Q-operator pointed out by Pasquier and Gaudin is exploited to produce a conjugated variablefor the parameter λ of the BT Bsuch thatbelongs to the spectrum of the Lax operator L(λ). As a consequence, the generating function of the composition B�1 ◦ . . . ◦ Bn of n BT's gives rise also to another canonical transformation separating variables for the model. For the Toda lattice the dual BT parametrized byis introduced.