The 1/N_c Expansion in Hadron Effective Field Theory

作     者：Guo-Ying Chen 陈国英

作者机构：Department of Physics and AstronomyHubei University of Education 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2018年第69卷第12期

页      面：683-688页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11305137 

主　　题：large Nc QCD effective field theory nucleon-nucleon interaction 

摘      要：We study the Nc scalings of pion-nucleon and nucleon-nucleon scatterings in hadron effective field *** assuming Witten s counting rules are applied to matrix elements or scattering amplitudes, which use the relativistic normalization for the nucleons, we find that the nucleon axial coupling gAis of order N_c^0, and a consistent large Nc counting can be established for the pion-nucleon and nucleon-nucleon scatterings. We also justify the nonperturbative treatment of the low energy nucleon-nucleon interaction with the large N_c analysis and find that the deuteron binding energy is of order 1/N_c.