Scaling study of the relativistic corrections to the static potential
Scaling study of the relativistic corrections to the static potential
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DOI：
10.22323/1.091.0122
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发表时间：
2009-11
期刊：
影响因子：
--
通讯作者：
Y. Koma;M. Koma
中科院分区：
文献类型：
--
作者：
Y. Koma;M. Koma
本文研究了SU（3）格点规范理论中静势的相对论修正，即O（1/m）修正、O（1/m^2）自旋相关修正和动量相关修正。这些修正是重夸克偶素有效场论的相关成分，称为势非相对论QCD。利用夸克-反夸克源场强相关器的多级算法，在0.25 - 1.2fm的距离范围内确定了这些修正。观察到合理的标度行为和长程非微扰贡献。
The relativistic corrections to the static potential, i.e. the O(1/m) correction, the O(1/m^2) spin-dependent and momentum-dependent corrections are investigated in SU(3) lattice gauge theory. These corrections are relevant ingredients of an effective field theory for heavy quarkonium called potential nonrelativistic QCD. Utilizing the multilevel algorithm for the field strength correlator on the quark-antiquark source, these corrections are determined at the distances ranged from 0.25 to 1.2 fm. A reasonable scaling behavior and long-range nonperturbative contributions are observed.