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Integrability of the field equations of invariant variational problems on linear frame bundles

✍ Scribed by J. Muñoz Masqué; M. Eugenia Rosado Marı́a


Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
347 KB
Volume
49
Category
Article
ISSN
0393-0440

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✦ Synopsis


The integrability of the Euler-Lagrange equations and the Jacobi fields of the natural basis of Lagrangian densities on the bundle of linear frames of a manifold which are invariant under diffeomorphisms, is stated. Applications to the reducibility of the pre-symplectic structure attached to such variational problems as defined in [Symp. Math. 14 (1974) 219], are also given.


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New, gauge-independent, second-order Lagrangian for the motion of classical, charged test particles is proposed. It differs from the standard, gauge-dependent, first-order Lagrangian by boundary terms only. A new method of deriving equations of motion from field equations is developed. When applied