用改进的格点哈密顿量计算2+1维SU(3)胶球质量  

Glueball Mass in Improved SU(3) Lattice Hamiltonian in 2+1 Dimensional

作　　者：刘金明[1] 李洁明[1] 郭硕鸿[1] 

机构地区：[1]中山大学物理系,广州510275

出　　处：《高能物理与核物理》2001年第5期383-387,共5页High Energy Physics and Nuclear Physics

基　　金：中国高等学校博士学科点专项科研基金;广东省自然科学基金资助&&

摘　　要：应用改进的格点哈密顿量和保持连续极限的耦合集团展开方法计算了 2+ 1维SU(3 ) 0 +和 0 - 胶球的质量 .计算到三级近似 ,标度行为已经很好 .与未改进的格点哈密顿量作的同样近似比较 ,改进的结果较快地进入标度区 。An improved lattice Hamiltonian is applied to the SU (3) lattice gauge theory in 2+1 dimensions. The glueball masses of 0 + and 0 have been calculated by using the coupled clusters expansion with the truncated eigenvalue equations in a scheme preserving the continuum limit. The calculations up to third order are carried out, and the results show better scaling behavior than that given by non-improved one.

关 键 词：格点规范理论 胶球质量 耦合集团展开 (2+1)维SU(2)规范场 格点哈密顿量 标度性 强相互作用粒子 能谱 波函数 

分 类 号：O572[理学—粒子物理与原子核物理]