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arXiv 0903.1791math-phmath.MP
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k-前辛Hamilton系统的约束算法。奇异场论的应用

Constraint algorithm for k-presymplectic Hamiltonian systems. Application to singular field theories

Xavier Gracia, Ruben Martin, Narciso Roman-Roy

摘要:

场论的k-辛公式特别简单,因为在它的描述中只需要切丛和余切丛。它的定义元素与力学辛公式中的定义元素有着密切的关系。它将表明,这种关系也站在前辛的情况下。以自然的方式,可以模仿前辛约束算法以获得可以应用于$k$ -前辛场论的约束算法,并且更具体地应用于由奇异拉格朗日量定义的场论的拉格朗日量和哈密顿量公式,以及应用于k-前辛场论的统一拉格朗日-哈密顿量形式主义(Skinner-Rusk形式主义)。文中还分析了该算法的两个应用实例。

英文摘要:

The k-symplectic formulation of field theories is especially simple, since only tangent and cotangent bundles are needed in its description. Its defining elements show a close relationship with those in the symplectic formulation of mechanics. It will be shown that this relationship also stands in the presymplectic case. In a natural way, one can mimick the presymplectic constraint algorithm to obtain a constraint algorithm that can be applied to $k$-presymplectic field theory, and more particularly to the Lagrangian and Hamiltonian formulations of field theories defined by a singular Lagrangian, as well as to the unified Lagrangian-Hamiltonian formalism (Skinner--Rusk formalism) for k-presymplectic field theory. Two examples of application of the algorithm are also analyzed.

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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