仿射Jacobi簇的矩阵实现与扩展的Lotka-Volterra格
The matrix realization of affine Jacobi varieties and the extended Lotka-Volterra lattice
摘要：
研究了完全可积的Hamilton系统，其单值矩阵与多项式矩阵的规范等价类$\boldsymbol{\mathcal{M}}_F$的代表有关。令$X$是由$\boldsymbol{\mathcal{M}}_F$的公共特征方程给出的代数曲线。我们构造了从代表集到$X$的Jacobi簇的仿射部分的同构。这种多样性对应于系统的不变流形，其中哈密顿流被线性化。作为应用，我们讨论了具有周期边界条件的扩展Lotka-Volterra格的代数完全可积性。
英文摘要：
We study completely integrable Hamiltonian systems whose monodromy matrices are related to the representatives for the set of gauge equivalence classes $\boldsymbol{\mathcal{M}}_F$ of polynomial matrices. Let $X$ be the algebraic curve given by the common characteristic equation for $\boldsymbol{\mathcal{M}}_F$. We construct the isomorphism from the set of representatives to an affine part of the Jacobi variety of $X$. This variety corresponds to the invariant manifold of the system, where the Hamiltonian flow is linearized. As the application, we discuss the algebraic completely integrability of the extended Lotka-Volterra lattice with a periodic boundary condition.
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