In this work we assume that quarks are described by Dirac spinors, with current masses which eventually can be set to zero, interacting through a confining and chirally invariant potential. Other than the strength of the interquark potential and the current masses of the quarks we have no free parameters. ' P , quark-antiquark vacuum condensation is allowed and the mass gap equation is solved for the chosen potential. The solution, and even the mere existence of it, depends quite sharply on the chosen potenti…
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