Four-dimensional QED with four-fermion interaction at finite temperature

作     者：Sin Kyu Kang Kye, Won-Ho Jae Kwan Kim 

作者机构：Department of Physics Korea Advanced Institute of Science and Technology Taejeon 373-1 Kusung-dong Yusung-ku South Korea 

出 版 物：《Physics Letters B》 (Phys Lett Sect B Nucl Elem Part High-Energy Phys)

年 卷 期：1993年第299卷第3-4期

页      面：358-366页

学科分类：07[理学] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：Korea Science and Engineering Foundation  KOSEF 

摘      要：Using the real-time formalism we derive the temperature dependent gap equation for a dynamically generated fermion mass of ladder QED with four-fermion interaction. We obtain the value of the critical temperature from the gap equation. Some numerical results are presented. We also consider the composite operator effective potential of this model. © 1993.