Nuclear force from lattice QCD
Nuclear force from lattice QCD
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DOI：
10.1103/physrevlett.99.022001
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发表时间：
2007-07-13
影响因子：
8.6
通讯作者：
Hatsuda, T.
中科院分区：
文献类型：
--
作者：
Ishii, N.;Aoki, S.;Hatsuda, T.
核子-核子 (NN) 势通过淬火近似中的晶格 QCD 模拟进行研究，使用 32(4) [类似或等于 (4.4 fm)(4)] 晶格上的血小板规范作用和威尔逊夸克作用。 NN 势 V-NN(r) 是根据核子的局部插值算子的等时 Bethe-Salpeter 振幅定义的。通过研究S-1(0)和S-3(1)通道中的神经网络相互作用，我们发现V-NN(r)的中心部分在短距离（r小于或接近0.5 fm）具有几百MeV的强排斥核，在中距离和长距离被吸引井包围。这些特征与已知的核力现象学特征是一致的。
The nucleon-nucleon (NN) potential is studied by lattice QCD simulations in the quenched approximation, using the plaquette gauge action and the Wilson quark action on a 32(4) [similar or equal to(4.4 fm)(4)] lattice. A NN potential V-NN(r) is defined from the equal-time Bethe-Salpeter amplitude with a local interpolating operator for the nucleon. By studying the NN interaction in the S-1(0) and S-3(1) channels, we show that the central part of V-NN(r) has a strong repulsive core of a few hundred MeV at short distances (r less than or similar to 0.5 fm) surrounded by an attractive well at medium and long distances. These features are consistent with the known phenomenological features of the nuclear force.