Evolution modes of the vacuum Wigner function in strong-field QED

I. Białynicki-Birula, E. D. Davis, J. Rafelski

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The physical content of a non-covariant quantum-field theoretic transport formalism for strong-field QED is addressed within an integral formulation of the evolution equations which highlights the relation to acoustic and Zitterbewegung modes of the field-free limit. Through the computation within this framework of the electric susceptibility of the vacuum at the one-loop level, it is established that the off-shell behaviour of the electron-positron field is correctly incorporated. The Zitterbewegung mode is seen to be solely responsible at the one-loop level for vacuum polarization. Implications for the full renormalisation of the theory are taken up.

Original languageEnglish (US)
Pages (from-to)329-338
Number of pages10
JournalPhysics Letters B
Issue number1-4
StatePublished - Jul 29 1993

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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