Generalization of the Extended Lagrangian Formalism on a Field Theory and Applications
arXiv:1105.4171 · doi:10.1103/PhysRevD.83.125011
Abstract
Formalism of extended Lagrangian represent a systematic procedure to look for the local symmetries of a given Lagrangian action. In this work, the formalism is discussed and applied to a field theory. We describe it in detail for a field theory with first-class constraints present in the Hamiltonian formulation. The method is illustrated on examples of electrodynamics, Yang-Mills field and non-linear sigma model.
17 pages, to be published in Phys. Rev. D
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