Operator product expansion at finite temperature

Details Operator product expansion at finite temperature Operator product expansion at finite temperature

1997-10-31

arxiv.org/abs/hep-ph/9710556v1

Phys.Lett. B416 (1998) 373-378

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, Latex

Scientific paper

10.1016/S0370-2693(97)01335-X

We extend an earlier, configuration space method to find the Wilson coefficients of operators appearing in the short distance expansion of thermal correlation functions of different quark bilinears. Considering all the different correlation functions, there arise, up to dimension four, two new operators, in addition to the two appearing already in the vacuum correlation functions. They would contribute substantially to the QCD sum rules, when the temperature is not too low.

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