Revista mexicana de física
versão impressa ISSN 0035-001X
BRETON, N. Lagrangiano efectivo en QED y lagrangiano de Born-Infeld. Rev. mex. fis. [online]. 2007, vol.53, suppl.4, pp. 10-16. ISSN 0035-001X.
The aim of this contribution is to establish a comparison between the nonlinear electrodynamics lagrangian by Born and Infeld and the effective lagrangian in QED that describes the vacuum polarization. It is shown that the dependence in the invariants is the same in the limit of weak constant electromagnetic fields.
Palavras-chave : Nonlinear electrodynamics; quantum electrodynamics.