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arXiv · 1604.08887

Gluon Green functions free of Quantum fluctuations

A. Athenodorou·Ph. Boucaud·F. De Soto·J. Rodríguez-Quintero·S. Zafeiropoulos
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Abstract

This letter reports on how the Wilson flow technique can efficaciously kill the short-distance quantum fluctuations of 2- and 3-gluon Green functions, removes the $Λ_{\rm QCD}$ scale and destroys the transition from the confining non-perturbative to the asymptotically-free perturbative sector. After the Wilson flow, the behavior of the Green functions with momenta can be described in terms of the quasi-classical instanton background. The same behavior also occurs, before the Wilson flow, at low-momenta. This last result permits applications as, for instance, the detection of instanton phenomenological properties or a cheap lattice calibration.

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A. Athenodorou, Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, S. Zafeiropoulos. 2017-01-04. Gluon Green functions free of Quantum fluctuations. https://doi.org/10.1016/j.physletb.2016.07.007

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