Podolsky's higher-order electromagnetism from first principles
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1997-07-01
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Accioly, A. [UNESP]
Mukai, H.
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Podolsky's higher-order field equations are obtained by generalizing the laws of Podolsky's electrostatics, which follow from Coulomb's generalized law and superposition, to be consistent with special relativity. In addition, it is necessary to take into account the independence of the observed charge of a particle on its speed. It is also shown that the gauge-independent term concerning the Feynman propagator for Podolsky's generalized electrodynamics has a good ultraviolet behaviour at the expense of a negative metric massive ghost which, contrary to what is currently assumed in the literature, is non-tachyonic. A brief discussion on Podolsky's characteristic length is presented as well.
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Nuovo Cimento della Societa Italiana di Fisica B, v. 112, n. 7, p. 1061-1068, 1997.