Infrared finite solutions for the gluon propagator and the QCD vacuum energy
arXiv:hep-ph/9705241 · doi:10.1016/S0370-2693(97)00673-4
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.
16 pages, latex file, 1 postscript figure, uses epsf.sty and axodraw.sty. To be published in Phys. Lett. B
Cited by in corpus (5)
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- Relating the Quark and Gluon Condensates Through the QCD Vacuum Energy
- A dynamical gluon mass solution in Mandelstam's approximation
- Squeezed gluon vacuum and the global colour model of QCD