Instantons and the <A2> condensate
Abstract
We argue that the <A2OPE> condensate found in the Landau gauge on lattices, when an operator product expansion of Green's functions is performed, might be explained by instantons. We use cooling to estimate the instanton contribution and extrapolate back the result to the thermalized configuration. The resulting <A2inst> is similar to <A2OPE>.
- Publication:
-
Physical Review D
- Pub Date:
- August 2002
- DOI:
- arXiv:
- arXiv:hep-ph/0203119
- Bibcode:
- 2002PhRvD..66c4504B
- Keywords:
-
- 12.38.Aw;
- 11.15.Ha;
- 12.38.Cy;
- 12.38.Gc;
- General properties of QCD;
- Lattice gauge theory;
- Summation of perturbation theory;
- Lattice QCD calculations;
- High Energy Physics - Phenomenology;
- High Energy Physics - Lattice
- E-Print:
- 6 pages, 1 fig., 1 tab., RevTeX to be used