Topology of SU(2) Vacuum Through Improved Coolings  

作　　者：CHEN Ying HE Bing LIU Da-Qing WU Ji-min 陈莹;何兵;刘大庆;吴济民(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039)

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100039

出　　处：《Chinese Physics Letters》2000年第9期640-642,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.19677205 and 19991487.

摘　　要：The Wilson and the improved cooling methods are used to explore the topological properties of SU (2) gauge field on lattice. Topological charge values which are close to integers are obtained. The measured charges through the Wilson cooling are within about 15% discrepancy to integers, and most of the configurations tend rapidly to 0-charged flat vacuum, while the charges through improved cooling are refined to almost integers within a few percentage of error and the corresponding plateaus last longer. The final charges and the evolutions of the same configuration cooled from various improved actions are different from each other due to the lattice artifact.

关 键 词：INTEGERS CHARGES CONFIGURATION 

分 类 号：O15[理学—数学]