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arXiv 1206.5891hep-lat
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格点量子色动力学中的高动量态

Accessing High Momentum States In Lattice QCD

Dale S. Roberts, Waseem Kamleh, Derek B. Leinweber, M. S. Mahbub, Benjamin J. Menadue

摘要:

定义了两种测度,用以评价不同动量下的涂抹内插算符与强子态的耦合强度。特别令人感兴趣的是,在何种程度上可以获得强重叠与个别高动量状态。这对于探索晶格上高动量转移时的强子结构和解决实验观察到的有趣现象至关重要。我们考虑了一个新的想法,改变的形状的涂抹运营商,以配合洛伦兹收缩的概率分布的高动量态,并显示减少的相对误差的两点函数,采用这种技术。我们最重要的发现是,重叠的状态变得非常尖锐的涂抹参数在高动量和微调,以确保这些国家的强大的重叠。

英文摘要:

Two measures are defined to evaluate the coupling strength of smeared interpolating operators to hadronic states at a variety of momenta. Of particular interest is the extent to which strong overlap can be obtained with individual high-momentum states. This is vital to exploring hadronic structure at high momentum transfers on the lattice and addressing interesting phenomena observed experimentally. We consider a novel idea of altering the shape of the smeared operator to match the Lorentz contraction of the probability distribution of the high-momentum state, and show a reduction in the relative error of the two-point function by employing this technique. Our most important finding is that the overlap of the states becomes very sharp in the smearing parameters at high momenta and fine tuning is required to ensure strong overlap with these states.

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。

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