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Infrared finite solutions for the gluon propagator and the QCD vacuum energy

J. C. Montero·A. A. Natale·P. S. Rodrigues da Silva
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Abstract

Nonperturbative infrared finite solutions for the gluon polarization tensor have been found, and the possibility that gluons may have a dynamically generated mass is supported by recent Monte Carlo simulation on the lattice. These solutions differ among themselves, due to different approximations performed when solving the Schwinger-Dyson equations for the gluon polarization tensor. Only approximations that minimize energy are meaningful, and, according to this, we compute an effective potential for composite operators as a function of these solutions in order to distinguish which one is selected by the vacuum.

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J. C. Montero, A. A. Natale, P. S. Rodrigues da Silva. 1997-05-06. Infrared finite solutions for the gluon propagator and the QCD vacuum energy. https://doi.org/10.1016/s0370-2693(97)00673-4

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