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 |
| Language: | English |
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D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2014-12-01
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| Series: | Moldavian Journal of the Physical Sciences |
| Online Access: | https://mjps.nanotech.md/archive/2014/article/36737 |