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arXiv math-ph/0109026math-phmath.MPmath.SG
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热传导方程和位势Burgers方程的Lagrangian、Hamiltonian及其它结构

Lagrangian, Hamiltonian and other Structures for the Heat Equation and Potential Burgers Equation

Miguel D. Bustamante, Sergio A. Hojman

摘要:

在这项工作中,我们构造了热方程(HE)和与热方程相关的许多张量结构的通解,例如对称,拉格朗日,泊松括号(PB)和拉格朗日括号,使用新设计的技术,可以应用于任何线性方程(例如,场论中的薛定谔方程,或力学中的小振荡问题)。特别地,我们改进了最近发现的一个与时间无关的PB,它定义了HE的哈密顿结构,并构造了HE的作用原理。我们还发现了一个新的结构,我们称之为度量结构,它可以用来定义替代的反交换的“哈密顿”理论,其中的度量或M-哈密顿必须明确的时间依赖。最后,我们将这些结果映射到潜在的Burgers方程。

英文摘要:

In this work, we construct the general solution to the Heat Equation (HE) and to many tensor structures associated to the Heat Equation, such as Symmetries, Lagrangians, Poisson Brackets (PB) and Lagrange Brackets, using newly devised techniques that may be applied to any linear equation (e.g., Schroedinger Equation in field theory, or the small-oscillations problem in mechanics). In particular, we improve a time-independent PB found recently which defines a Hamiltonian Structure for the HE, and we construct an Action Principle for the HE. We also find a new structure, which we call a Metric Structure, which may be used to define alternative anti-commutative "Hamiltonian" theories, in which the Metric- or M-Hamiltonians have to be explicitly time-dependent. Finally, we map some of these results to the Potential Burgers Equation.

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。

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