Calculation of Screening Masses in a Chiral Quark Model
Xiangdong Li, Hu Li, C. M. Shakin, Qing Sun
Abstract
We consider a simple model for the coordinate-space vacuum polarization function which is often parametrized in terms of a screening mass. We discuss the circumstances in which the standard result for the screening mass, msc=πT, is obtained. In the model considered here, that result is obtained when the momenta in the relevant vacuum polarization integral are small with respect to the first Matsubara frequency.
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