摘要
本文在1/N展开下计算了(2+1)维手征Gross-Neveu模型的顶角修正和费米子质量修正,并根据手征Ward-Takahashi恒等式得到的费米子质量公式讨论了1/N阶的相结构。结果表明,利用手征Ward-Takahashi恒等式来研究手征对称性的破缺有利于讨论手征对称性的高阶性质。
In 1/N order vertex and fermion mass corrections are calculated in (2+1)dimensional chiral Gross-Neveu model. In terms of the fermion mass spectrum, derived from chiral Ward-Takahashi identities, the phase structure in 1/N order is discussed. It turns out that chiral W-T identities with composite fields are a powerful method to investigate chiral symmetry breaking and higher order corrections.
出处
《高能物理与核物理》
CSCD
北大核心
1993年第9期811-815,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
