Modified instanton profile effects from lattice Green functions

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2004-12

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Ciencias Integradas

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http://hdl.handle.net/10272/18545

Abstract

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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Modified instanton; Lattice green functions

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Boucaud, P., De Soto, F., Le Yaouanc, A., ... Rodríguez Quintero, J. (2004). Modified instanton profile effects from lattice Green functions. Physical Review D, 70(11). DOI: https://doi.org/10.1103/physrevd.70.114503

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