手征SU(3)夸克模型下利用共振群方法抽取非定域势并计算部分轻超核结合能  

Extracting the Nonlocal Potential in RGM Method and Calculating the Binding Energies of Part of Light Hypernuclei

作　　者：白莹[1] 熊玉萍[1] 

机构地区：[1]福建工程学院数理系,福建福州350007

出　　处：《临沂师范学院学报》2006年第6期36-40,共5页Journal of Linyi Teachers' College

摘　　要：首先利用共振群方法(RGM)计算了手征SU(3)模型下非定域ΛN相互作用位,以期中短程QCD行为能被恰当的描述．然后把轻超核考虑成一个壳心核加上一个Λ粒子的二集团结构,采用共振群方法和Kohn-Hulthen-Kato变分法计算部分轻超核的结合能．与生成坐标法相比,用共振群方法解析得出的非定域ΛN相互作用位,其过程更严谨．用此非定域ΛN相互作用位描述部分轻超核的结合能,其效果更好．In order to properly describe the short and medium range behaviors of the interaction, the basic Y-N interactions are extracted from constituent quark model, and the nonlocal potential of Y-N interaction in SU（3） quark model is calculated in RGM method first. Next, the light hypernuclei is assumed to have the structure of a nuclear core plus a lambda particle. Then, the GCM method and Kohn-Hulthen-Kato variation are used to calculate the binding energies of part of light hypernuclei. The procedure in this method is analytic entirely. Compared with the procedure in Generator Coordinate Method （GCM）, the result is much stricter.

关 键 词：超核 手征SU(3)夸克模型 共振群 非定域势 结合能 量子色动力学 

分 类 号：O413.1[理学—理论物理]