色屏蔽效应与重子谱

利用从格点规范理论计算得出的,包括色屏蔽效应的禁闭位势;研究了重子结构,计算了重子谱及相应状态下的夸克分布的均方根半径.     

SU（3）F Meson Mass Formula from Random Phase Approximation

We present an SU(3)F meson mass formula from random phase approximation. Both the mesons of ground-state pseudoscalar octet and ground-state vector octet are described quite well by this mass formula. We also estimate the current and constituent quark masses from the naive quark model and the PCAC relation.     

IBM跨壳激发的玻色子展开厄米途径

本文借助Holstein-Primakoff玻色子展开方法在IBM哈密顿量中引入厄米和有限形式的补充项,以描述跨壳激发,并推广内禀凝聚态方法处理闯入态.按照这种理论方法计算了Sn核的低能谱,得到了与实验相符合的振动谱及附加的转动谱.     

微观IBM2的内禀凝聚态方法与168Er转动能谱的计算

本文采用内禀凝聚态方法,取消IBM2中通常采用的最大F旋截断近似,对变形核,用内禀凝聚态及其内禀激发来描述低能集体转动态.按照这种理论方法计算了¹⁶⁸Er的低能转动能谱.结果表明,对于激发带,最大F旋截断近似很不好.对中子玻色子和质子玻色子的内禀激发是分别进行的.     

Meson decays in an extended Nambu—Jona-Lasinio model with heavy quark flavors

In a previous work,we proposed an extended Nambu-Jona-Lasinio(NJL)model including heavy quark flavors.In this work,we will calculate strong and radiative decays of vector mesons in this extended NJL model,including lightρ,ω,K*,(?)and heavy D~*,D_s~*,B~*,B_s~*.     

Study of the heavy molecular states in the quark model with meson exchange interaction

Some charmonium-like resonances such as X(3872) can be interpreted as possible D^(*)D^(*) molecular states. Within the quark model, we study the structure of such molecular states and the similar B^(*)D^(*) molecular states by taking into account the light meson exchange (π, η, ρ, ω and σ) between two light quarks from different mesons.     

关联对的结构

利用了类似于H–F的方法来自洽地确定S对(和D对)的结构,此外,为了避免因辛弱数混合而产生的伪态困难,改进了S对的定义并用不成对粒子算符来构造D对,以使它们相互独立.     

神奇有趣的五夸克态

对今年国际上有关五夸克态的实验与理论研究现状作一个总体的评述 ,指出了有待解决的主要问题和相关的一些背景知识 ,并简单介绍了作者所在研究小组的有关研究工作 .