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High Energy Physics - Phenomenology

arXiv:hep-ph/0505150 (hep-ph)
[Submitted on 17 May 2005]

Title:Instanton traces in lattice gluon correlation functions

Authors:Ph. Boucaud (Orsay, LPT), F. De Soto (Huelva U. and LPSC, Grenoble), A. Le Yaouanc, J.P. Leroy, J. Micheli, O. Pene (Orsay, LPT), J. Rodriguez-Quintero (Huelva U.)
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Abstract: Strong coupling constant computed in Landau gauge and MOM renormalization scheme from lattice two and three gluon Green Functions exhibits an unexpected behavior in the deep IR, showing a maximum value around $1 {\rm GeV}$. We analise this coupling below this maximum within a semiclassical approach, were gluon degrees of freedom at very low energies are described in terms of the classical solutions of the lagrangian, namely instantons. We provide some new results concerning the relationship between instantons and the low energy dynamics of QCD, by analising gluon two- and three-point Green functions separately and with the help of a cooling procedure to eliminate short range correlations.
Comments: 4 pages, talk given at XXXX Rencontres de Moriond on QCD and Hadronic Interactions, La Thuile (Italy)
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0505150
  (or arXiv:hep-ph/0505150v1 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0505150

Submission history

From: Feliciano de Soto [view email]
[v1] Tue, 17 May 2005 15:03:01 UTC (33 KB)
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