摘要
用蒙特卡洛重正化群方法讨论了二维随机三角点阵上SU(2)×SU(2)手征模型的β函数行为,得出它的行为与四维SU(2)规范理论的β函数相似,但强、弱耦合区的过渡更为平滑,不存在尖锐的小峰,标度区从β=1.6开始.
The β function behavior for SU(2)×SU(2) chiral model on 2-dimensional random triangle lattice has been studied with Monte Carlo renormalization group method. Its behavior is similar to that of the 4-dimensional SU(2) gauge theory. However, it is smoother from weak to strong coupling regions. There is no nonperturbative peak structure. The asymptotic scaling starts beyond β=1.6.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第2期188-192,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
