摘要A general expression for the scalar susceptibility in QED3 is given. We adopt the Dyson–Schwinger equation for the fermion propagator to solve χc within a range of the number of fermion flavors, N, in chiral symmetry breaking phase. We show that the scalar susceptibility has a peak and the corresponding N is less than the critical number of fermion flavors for chiral symmetry.
Abstract：A general expression for the scalar susceptibility in QED3 is given. We adopt the Dyson–Schwinger equation for the fermion propagator to solve χc within a range of the number of fermion flavors, N, in chiral symmetry breaking phase. We show that the scalar susceptibility has a peak and the corresponding N is less than the critical number of fermion flavors for chiral symmetry.
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2011, Vol. 28 
