Abstract
The invariance of the two-potential formulation of Maxwell's equations relative to a set of transformations of the fields and potentials forming the group GL(2, c) ⊗ GL(2, c), which narrows to the group GL(2, c) when the number of independent degrees of freedom characteristic of an electromagnetic field is taken into account, is established. The indicated invariance reflects a symmetry which is internally intrinsic to the polarization space of an electromagnetic field.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 39–42, December, 1981.
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Strazhev, V.I., Pletyukhov, V.A. Symmetry of polarization space and supplementary invariance of Maxwell's equations. Soviet Physics Journal 24, 1100–1103 (1981). https://doi.org/10.1007/BF00893733
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DOI: https://doi.org/10.1007/BF00893733