2＋1维CP^1模型拓扑项可移性研究  

R emovability of the Topological Term in the 2+1 Dimensional CP￣1 Model

作　　者：高孝纯[1] 徐东辉[1] 

机构地区：[1]浙江大学物理系

出　　处：《高能物理与核物理》1995年第5期413-419,共7页High Energy Physics and Nuclear Physics

基　　金：高等学校博士点专项基金;国家自然科学基金;浙江省自然科学基金

摘　　要：求得了移去２＋１维ＣＰ１模型拓扑项的经典正则变换及相应的量子么正变换，并指出模型中拓扑项的存在性不仅与微观自旋模型有关，还与系统真空态的性质有关．The removability of the topological term in 2+1 Dimensional CP￣1 model is studied. Both the classical canonical transformation and quantum unitary transformation for the removal of the topological term are obtained. It is pointed out that,in order to give an answer to the question of whether the topological term exists or not, one has to study not only the corresponding microscopic spin model but also the vacuum structure of the CP￣1 model.

关 键 词：CP1模型 拓扑项 可移性 2+1维 

分 类 号：O413.3[理学—理论物理]