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25 April 2024

» arxiv » 1104.3764

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Causal signal transmission by quantum fields. IV: The causal Wick theorem
L.I.Plimak ; S.Stenholm ;
Date:	19 Apr 2011
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 is propagation of the free field in space and time.
Source:	arXiv, 1104.3764
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