Causal signal transmission by quantum fields. IV. the causal Wick theorem

L. I. Plimak*, S. Stenholm

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Wick's theorem in the Schwinger-Perel-Keldysh closed-time-loop formalism is written in a form where the place of contractions is taken by the linear response function of the field. This result demonstrates that the physical information supplied by Wick's theorem for operators is propagation of the free field in space and time.

    Original languageEnglish
    Article number065025
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume84
    Issue number6
    DOIs
    Publication statusPublished - 19 Sep 2011
    MoE publication typeA1 Journal article-refereed

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