Variational Equations and Symmetries in the Lagrangian Formalism II. Arbitrary Vector Fields

Details Variational Equations and Symmetries in the Lagrangian Formalism II. Arbitrary Vector Fields Variational Equations and Symmetries in the Lagrangian Formalism II. Arbitrary Vector Fields

1995-12-21

arxiv.org/abs/hep-th/9512176v2

Fortsch.Phys. 45 (1997) 727-751

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, LATEX, some errors corrected, many simplifications of the proofs

Scientific paper

We continue the study of symmetries in the Lagrangian formalism of arbitrary order with the help of the so-called Anderson-Duchamp-Krupka equations. For the case of second-order equations and arbitrary vector fields we are able to establish a polynomial structure in the second-order derivatives. This structure is based on the some linear combinations of Olver hyper-Jacobians. We use as the main tools Fock space techniques and induction. This structure can be used to analyze Lagrangian systems with groups of Noetherian symmetries. As an illustration we analyze the case of Lagrangian equations with Abelian gauge invariance.

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