Resumen

MARTINEZ-LEDESMA, J.L.  y  MENDOZA, S.. Rev. mex. fis. [online]. 2004, vol.50, n.4, pp.337-339. ISSN 0035-001X.

Astronomical observations are suggesting that the fine structure constant varies cosmologically. We present an analysis on the consequences that these variations might induce on the electromagnetic field as a whole. We show that under these circumstances the electrodynamics in vacuum could be described by two fields, the "standard" Maxwell's field and a new scalar field. We provide a generalised Lorentz force which can be used to test our results experimentally.

Palabras llave : Classical electromagnetism; quantum electrodynamics; cosmology.

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