# Another formulation of the Wick’s theorem. Farewell, pairing?

Special Matrices (2015)

- Volume: 3, Issue: 1, page 169-174, electronic only
- ISSN: 2300-7451

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topIgor V. Beloussov. "Another formulation of the Wick’s theorem. Farewell, pairing?." Special Matrices 3.1 (2015): 169-174, electronic only. <http://eudml.org/doc/271781>.

@article{IgorV2015,

abstract = {The algebraic formulation of 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 product of only two operators. This formulation is extremely convenient for practical calculations in quantum field theory, statistical physics, and quantum chemistry by the standard packages of the well known computer algebra systems.},

author = {Igor V. Beloussov},

journal = {Special Matrices},

keywords = {vacuum expectation value; chronological product; contractions},

language = {eng},

number = {1},

pages = {169-174, electronic only},

title = {Another formulation of the Wick’s theorem. Farewell, pairing?},

url = {http://eudml.org/doc/271781},

volume = {3},

year = {2015},

}

TY - JOUR

AU - Igor V. Beloussov

TI - Another formulation of the Wick’s theorem. Farewell, pairing?

JO - Special Matrices

PY - 2015

VL - 3

IS - 1

SP - 169

EP - 174, electronic only

AB - The algebraic formulation of 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 product of only two operators. This formulation is extremely convenient for practical calculations in quantum field theory, statistical physics, and quantum chemistry by the standard packages of the well known computer algebra systems.

LA - eng

KW - vacuum expectation value; chronological product; contractions

UR - http://eudml.org/doc/271781

ER -

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