Discussion for the Solutions of Dyson-Schwinger Equations at <i>m</i>≠ 0 in QED<sub>3</sub>

• 作者: Hongshi Zong Hongtao Feng Huixia Zhu Weimin Sun
• 来源期刊: 现代物理(英文)
• 学科: 物理学
• 关键词: QED3 FERMION PROPAGATOR SOLUTIONS of DSEs
• 年，卷（期）: 2013,（4）
• 页码范围: 151-156
• 页数: 6页
• 分类号: O57

摘要

In the case of nonzero fermion mass, within a range of Ansatze for the full fermion-boson vertex, we show that Dyson-Schwinger equation for the fermion propagator in QED3 has two qualitatively distinct dynamical chiral symmetry breaking solutions. As the fermion mass increases and reaches to a critical value mc, one solution disappears, and the dependence of mc on the number of fermion flavors is also given.