背景场中夸克模型的味无关轴矢流

Flavor-Singlet Axial-Vector Current in Quark Model Within Background Field

对于以赝标介子场为背景场的夸克模型,我们使用Seeley-DeWitt系数算出了味无关轴矢流,这个流与质子中的夸克自旋成分直接相关。在大N_c展开下,这个流是O(1)。

We calculate the flavor-singlet axial-vector current in a quark model within pseudoscalar background-field through the Seeley-DeWitt coefficients. This current is responsible for the quark spin content of proton, and is of O(1) in the large-N(?) expansion.