arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0909.5637hep-lathep-phnucl-th
收藏

格点量子色动力学中的核力

Nuclear Forces from Lattice QCD

T. Hatsuda

摘要:

提出了一种从格点量子色动力学的Bethe-Salpeter振幅中提取核子-核子(NN)势的方法。它被应用到两个核子的晶格淬火QCD模拟。通过解开S-态和D-态之间的混合,我们得到了非局域NN势的速度展开的领先顺序的中心势和张量势。分析了NN势的空间结构、夸克质量依赖性和速度依赖性。给出了(2+1)味QCD模拟的初步结果。

英文摘要:

A method to extract nucleon-nucleon (NN) potentials from the Bethe-Salpeter amplitude in lattice QCD is presented. It is applied to the two nucleons on the lattice with quenched QCD simulations. By disentangling the mixing between the S-state and the D-state, we obtain central and tensor potentials in the leading order of the velocity expansion of the non-local NN potential. The spatial structure, the quark mass dependence and the velocity dependence of the NN potential are analyzed. Preliminary result in (2+1)-flavor QCD simulations is also shown.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑