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arXiv · 0901.3096

A gauge-theoretic description of $\mu$-prolongations, and $\mu$-symmetries of differential equations

G. Gaeta
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Abstract

We consider generalized (possibly depending on fields as well as on space-time variables) gauge transformations and gauge symmetries in the context of general -- that is, possibly non variational nor covariant -- differential equations. In this case the relevant principal bundle admits the first jet bundle (of the phase manifold) as an associated bundle, at difference with standard Yang-Mills theories. We also show how in this context the recently introduced operation of $\mu$-prolongation of vector fields (which generalizes the $\la$-prolongation of Muriel and Romero), and hence $\mu$-symmetries of differential equations, arise naturally. This is turn suggests several directions for further development. S0ome detailed examples are also given.

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G. Gaeta. 2009-01-20. A gauge-theoretic description of $\mu$-prolongations, and $\mu$-symmetries of differential equations. https://doi.org/10.1016/j.geomphys.2009.01.004

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