A new derivation of the Backlund transformation for the Volterra lattice

被引:7
|
作者
Kajinaga, Y [1 ]
Wadati, M [1 ]
机构
[1] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 113, Japan
关键词
Backlund transformation; Volterra lattice; Miura transformation; inverse scattering problem; conservation laws; nonlinear superposition formula; KdV equation;
D O I
10.1143/JPSJ.67.2237
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using a lattice version of the Miura transformation between two nonlinear evolution systems called the Volterra lattice and the modified Volterra lattice, we have obtained a pair of Backlund transformations for the Volterra lattice onto itself. By this form of the transformations, we can show the relation between the inverse scattering problems and the discrete Miura transformation, then derive the conservation laws and the superposition formula. In a suitable continuum limit, they reduce to be a complete analogue of the Backlund transformations for the Korteweg-de Vries equations first obtained by Wahlquist and Estabrook.
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页码:2237 / 2241
页数:5
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