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arXiv · 1303.4350

Disformal invariance of Maxwell's field equations

E. Goulart·F. T. Falciano
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Abstract

We show that Maxwell's electrodynamics in vacuum is invariant under active transformations of the metric. These metrics are related by disformal mappings induced by derivatives of the gauge vector $A_μ$ such that the gauge symmetry is preserved. Our results generalize the well known conformal invariance of electrodynamics and characterize a new type of internal symmetry of the theory. The group structure associated with these transformations is also investigated in details.

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E. Goulart, F. T. Falciano. 2013-03-18. Disformal invariance of Maxwell's field equations. https://doi.org/10.1088/0264-9381%2F30%2F15%2F155020

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