Let's forget about the pairing
The algebraic formulation of a Wick's theorem that allows one to present the vacuum or thermal averages of the chronological product of an arbitrary number of field operators as a determinant (permanent) of the matrix is proposed. Each element of the matrix is the average of the chronological p...
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| Format: | article |
| Langue: | EN |
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D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2014
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| Accès en ligne: | https://doaj.org/article/526894ab74d4477481227aecf166c546 |
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