Calculating the photonic condensate in perturbative QED

A. Vainshtein, V. Zakharov

Research output: Contribution to journalArticlepeer-review

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We consider the vacuum expectation value 〈0|Fμv2|0〉, where Fμv is the electromagnetic field strength tensor, and use the point splitting technique to regularize the calculation. Then 〈0|Fμv2|0〉 turns out to vanish in one-loop approximation. In higher orders the vacuum expectation value appears to be divergent but calculable in term s of the β-function within the regularization scheme specified.

Original languageEnglish (US)
Pages (from-to)415-418
Number of pages4
JournalPhysics Letters B
Issue number4
StatePublished - Jul 27 1989

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