arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.4912nlin.SImath.DS
收藏

周期Toda格的Nekhoroshev定理

Nekhoroshev theorem for the periodic Toda lattice

Andreas Henrici, Thomas Kappeler

摘要:

具有$N$格点的周期Toda晶格是一个双参数$N-1$耦合谐振子族的全局辛同构。动作变量填充了$\R^{N-1}$的整个正象限。我们证明,在内部的正象限以及在附近的起源,户田哈密顿是严格凸的,因此Nekhoroshev定理适用于(几乎)所有部分的相空间。

英文摘要:

The periodic Toda lattice with $N$ sites is globally symplectomorphic to a two parameter family of $N-1$ coupled harmonic oscillators. The action variables fill out the whole positive quadrant of $\R^{N-1}$. We prove that in the interior of the positive quadrant as well as in a neighborhood of the origin, the Toda Hamiltonian is strictly convex and therefore Nekhoroshev's theorem applies on (almost) all parts of phase space.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑