Modified instanton profile effects from lattice Green functions
- Boucaud, Ph.
- Soto, F. de
- Le Yaouanc, A.
- Leroy, J. P.
- Micheli, J.
- Pène, Olivier
- Rodríguez Quintero, J.
Publication date
December 2004
DOI Publisher
American Physical Society (APS) ISSN
1550-7998 Language
EnglishAbstract
We trace here instantons through the analysis of pure Yang-Mills gluon Green functions in the Landau gauge for a window of IR momenta (0.4<k<0.9 GeV). We present lattice results that can be fitted only after substituting the Belavin-Polyakov-Shvarts-Tyupkin profile in the instanton-liquid model (ILM) by one based on the Diakonov and Petrov variational methods. This also leads us to gain information on the parameters of the ILM
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