A NOVEL HIERARCHY OF INTEGRABLE LATTICES
A NOVEL HIERARCHY OF INTEGRABLE LATTICES
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DOI:
10.1088/0266-5611/10/6/009
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发表时间:
1994-01
期刊:
影响因子:
2.1
通讯作者:
I. Merola;O. Ragnisco;Guizhang Tu
中科院分区:
文献类型:
--
作者:
I. Merola;O. Ragnisco;Guizhang Tu
In the framework of the reduction technique for Poisson-Nijenhuis structures, we derive a new hierarchy of integrable lattices, whose continuum limit is the AKNS hierarchy. In contrast to other differential-difference versions of the AKNS system, our hierarchy is endowed with a canonical Poisson structure and, moreover, it admits a vector generalization. We also solve the associated spectral problem and explicitly construct action-angle variables through the r-matrix approach.