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