OPERATOR PRODUCT EXPANSIONS, SLAVNOV-TAYLOR IDENTITIES AND d=4 CONDENSATES
- 10 April 1990
- journal article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A
- Vol. 5 (9) , 653-660
- https://doi.org/10.1142/s0217732390000731
Abstract
Operator product expansion (OPE) for the gluon propagator and the corresponding Slavnov-Taylor identities are discussed. Tree-level contribution of the d=4 quark and bilinear in the gluon fields condensates is calculated. It is transverse without any connection between ghost and gluon condensates. Drawbacks of the previous calculations are uncovered. It is found that there is non-zero contribution of the gauge non-invariant quark-gluon condensate.Keywords
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