Derivative expansion for the one-loop effective Lagrangian in QED

V. P. Gusynin, I. A. Shovkovy

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


The derivative expansion of the one-loop effective Lagrangian in QED4 is considered. The first term in such an expansion is the famous Schwinger result for a constant electromagnetic field. In this paper we give an explicit expression for the next term containing two derivatives of the field strength Fμv. The results are presented for both fermion and scalar electrodynamics. Some possible applications of an inhomogeneous external field are pointed out.

Original languageEnglish (US)
Pages (from-to)282-289
Number of pages8
JournalCanadian journal of physics
Issue number5-6
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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