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arXiv 2103.04401math-phmath.MP
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Hamilton向量场上Euler-Poincaré流的匹配对分析

Matched Pair Analysis of Euler-Poincaré Flow on Hamiltonian Vector Fields

Oğul Esen, Cristina Sardón, Marcin Zajac

摘要:

本文给出对称反变张量空间$\mathfrak{T}\mathcal{Q}$的匹配对分解。由此产生了\textit{mutual}相互作用下的$\mathfrak{T}\mathcal{Q}$的两个互补李子代数.引入提升算子,确定了哈密顿向量场空间的匹配对分解。在此基础上,将空间上的Euler-Poincaré流分解为两个子动力学:一个子动力学是等熵流的Euler-Poincaré方程,另一个子动力学对应于高阶逆变张量上的Euler-Poincaré方程($n\geq 2$)

英文摘要:

In this paper we provide a matched pair decomposition of the space of symmetric contravariant tensors $\mathfrak{T}\mathcal{Q}$. From this procedure two complementary Lie subalgebras of $\mathfrak{T}\mathcal{Q}$ under \textit{mutual} interaction arise. Introducing a lift operator, the matched pair decomposition of the space of Hamiltonian vector fields is determined. According to these realizations, Euler-Poincaré flows on such spaces are decomposed into two subdynamics: one of which is the Euler--Poincaré formulation of isentropic fluid flows, and the other one corresponds with Euler--Poincaré equations on higher order contravariant tensors ($n\geq 2$)

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