Infrared finite gluon propagator and the structure of chiral symmetry breaking

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1996-12-01

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Montero, J. C. [UNESP]
Natale, A. A. [UNESP]
Rodrigues Da Silva, P. S. [UNESP]

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We study the chiral symmetry breaking in QCD, using an effective potential for composite operators, with infrared finite gluon propagators that have been found by numerical calculation of the Schwinger-Dyson equations as well as in lattice simulations. The existence of a gluon propagator that is finite at k2 = 0 modifies substantially the transition between the phases with and without chiral symmetry.

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Progress of Theoretical Physics, v. 96, n. 6, p. 1209-1222, 1996.