Non-Abelian field strength bilocal correlator at finite temperature in the model of dilute instanton gas
Abstract
Bilocal correlator in gluodynamics is evaluated at finite temperature in the framework of dilute instanton gas model. It is demonstrated that vacuum correlation length decreases with a growing temperature. Comparison with lattice calculations shows that instanton gas model does not describe real vacuum of gluodynamics. Density of instantons and the structure of nonperturbative vacuum of gluodynamics are discussed.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- July 2004
- DOI:
- arXiv:
- arXiv:hep-ph/0405007
- Bibcode:
- 2004JHEP...07..007A
- Keywords:
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- Nonperturbative Effects Solitons Monopoles and Instantons QCD;
- High Energy Physics - Phenomenology;
- High Energy Physics - Lattice
- E-Print:
- 10 pages, 4 figures