Low-energy QCD: Chiral coefficients and the quark-quark interaction

Details Low-energy QCD: Chiral coefficients and the quark-quark interaction Low-energy QCD: Chiral coefficients and the quark-quark interaction

1995-11-13

arxiv.org/abs/nucl-th/9511016v2

Phys.Rev.C53:2410-2421,1996

Physics

Nuclear Physics

Nuclear Theory

28 pages, Latex, 6 postscript figures available on request to frank@phys.washington.edu

Scientific paper

10.1103/PhysRevC.53.2410

A detailed investigation of the low-energy chiral expansion is presented within a model truncation of QCD. The truncation allows for a phenomenological description of the quark-quark interaction in a framework which maintains the global symmetries of QCD and permits a $1/N_c$ expansion. The model dependence of the chiral coefficients is tested for several forms of the quark-quark interaction by varying the form of the running coupling, $\alpha (q^2)$, in the infrared region. The pattern in the coefficients that arises at tree level is consistent with large $N_c$ QCD, and is related to the model truncation.

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