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arXiv 1402.4087math-phmath.MP
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二阶经典场论的一个新的多辛统一形式

A new multisymplectic unified formalism for second-order classical field theories

Pedro D. Prieto-Martínez, Narciso Román-Roy

摘要:

我们提出了一个新的多辛框架的二阶经典场论的基础上扩展的统一拉格朗日-哈密顿形式主义,这些系统。这个模型提供了一个直接和简单的方法来定义庞加莱-嘉当形式,并澄清了勒让德映射的构造(作为约束算法的结果而明确获得)。同样,它消除了不必要的任意性的解决方案的场方程,这是深入分析,并写在完整的部分和多向量场。因此,我们的治疗完成了以前实现这一目标的尝试。该公式适用于描述一些物理的例子,特别是,给另一种多辛描述的Korteweg-de Vries方程。

英文摘要:

We present a new multisymplectic framework for second-order classical field theories which is based on an extension of the unified Lagrangian-Hamiltonian formalism to these kinds of systems. This model provides a straightforward and simple way to define the Poincaré-Cartan form and clarifies the construction of the Legendre map (univocally obtained as a consequence of the constraint algorithm). Likewise, it removes the undesirable arbitrariness in the solutions to the field equations, which are analyzed in-depth, and written in terms of holonomic sections and multivector fields. Our treatment therefore completes previous attempt to achieve this aim. The formulation is applied to describing some physical examples; in particular, to giving another alternative multisymplectic description of the Korteweg-de Vries equation.

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