口袋参数的流夸克质量效应

Current Quark Mass Dependence on Bag Constant

利用小质量展开的方法,我们在DS方程框架下,利用一个复杂一些的胶子传播模型计算了口袋参数随流夸克质量的变化.计算结果发现,比较文献[1]中利用一个简单的胶子传播子的模型的计算结果发现,我们得到的口袋参数随流夸克质量的变化趋势与之前的计算结果不同,说明文献[1]中所用的不包含紫外行为的胶子传播子模型在处理一些问题的时候是不适合的.

The current quark mass dependence of bag constant is calculated by the method of small mass expansion in the framework of Dyson-Schwinger approach with a complicate model gluon propagator.It is found that the result in the present study is different from that presented in Ref.[1] which uses a very simple model gluon propagator.Therefore it is concluded that the simple model gluon propagator used in Ref.[1] is improper in dealing with some problems.