核子波函数的变分研究
A Variational Study of the Nucleon Wavefunction
摘要：
本文在格点上通过使核子与由含变分参数的插值场产生的试探函数之间的重叠最大化，研究了核子的结构。我们考察了夸克源的空间范围、规范场拖尾程度、夸克源的位置、低狄拉克分量和双夸克子结构的影响。探索性计算淬火威尔逊费米子在介子质量为900兆电子伏实现重叠高达80%，并没有双夸克子结构的证据。
英文摘要：
The structure of the nucleon is studied variationally on the lattice by maximizing the overlap between the nucleon and a trial function generated by an interpolating field containing variational parameters. We examine the effect of the spatial extent of smeared quark sources, the degree of gauge field smearing, the positions of smeared quark sources, inclusion of lower Dirac components and of diquark substructure. Exploratory calculations with quenched Wilson fermions at a pion mass of 900 MeV achieved overlaps as high as 80%, and there was no evidence of diquark substructure.
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