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arXiv 1204.4976nlin.SI
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与三阶代数曲线和代数几何解相关的耦合Schodinger族

The coupled Schodinger hierarchy associated with third-order algebraic curves and algebro-geometric solutions

Yu Hou, Engui Fan

摘要:

通过引入Lenard递推方程,我们导出了与Manakov系统和Sasa-Satsuma系统相关联的一般耦合非线性$\mathrm{\ddot{o}}$ dinger(CNLS)族.基于CNLS族的Lax矩阵的特征多项式,得到了算术亏格$m-2$的一条三阶代数曲线$\mathcal{K}_{m-2}$,并由此建立了相应的Baker-Ahhiezer函数、亚纯函数以及Dirichlet和Neumann因子模拟的Dubrovin型方程.利用这些结果和代数曲线理论,我们得到了整个CNLS族的Baker-Ahhiezer函数、亚纯函数,特别是代数几何解的显式theta函数表示.

英文摘要:

By introducing Lenard recursion equations, we derive a general coupled nonlinear Sch$\mathrm{\ddot{o}}$dinger (CNLS) hierarchy associated with well-known Manakov system and Sasa-Satsuma system. Based on the characteristic polynomial of Lax matrix for CNLS hierarchy, we obtain a third order algebraic curve $\mathcal{K}_{m-2}$ of arithmetic genus $m-2$, from which we establish the associated Baker-Ahhiezer functions, meromorphic function and Dubrovin-type equations for analogs of Dirichlet and Neumann divisors. Using these results and the theory of algebraic curve, we obtain the explicit theta function representations of the Baker-Ahhiezer functions, the meromorphic function, and in particular, of the algebro-geometric solutions for the entire CNLS hierarchy.

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