摘要
本文对具有严格基态解的格点规范哈密顿量,结合变分法和Monte Carlo方法,在18~2格点上,计算了2+1维SU(2)规范群的正二十面体分立点群的胶球质量,在0<1/g^2≤2范围内,得到与SU(2)群的解析变分法一致的结果.验证了质量隙的标度行为是am=2.3g^2.
By combining Monte Carlo method and variational method, we calculate the mass gap of SU(2) lattice gauge theory in 18 18 lattice of 2 + 1 dimensions by means of the icosahetral subgroup (Y120) using a hamiltonian of which the ground state is exactly known. In the range 0<1/g^2≤2, we obtain the results which are in good agreement with analytical variational calculation of SU(2) group. The scaling behaviour of mass gap am=2.3 g^2 is confirmed.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第4期316-319,共4页
High Energy Physics and Nuclear Physics
基金
国家教委科学基金
中山大学高等学术中心基金会资助
