Renormalons and confinement
Renormalons and confinement
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重整和限制
DOI：
10.1016/0370-2693(95)01234-2
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Z. Ligeti
中科院分区：
文献类型：
--
作者：
U. Aglietti;Z. Ligeti
我们计算的静势的重正马龙歧义，在大量的口味的限制。将QED结果外推到QCD意味着夸克势的大距离行为在微扰论中是任意的，因为有无限多的处方可以分配。在大距离的势的形状不仅受最接近Borel平面原点的重正马龙极点的影响，而且需要所有重正马龙贡献的重新确认。特别是，可以容纳禁闭，但没有解释。在短距离处，电势中没有线性项的指示。
We compute the renormalon ambiguity of the static potential, in the limit of a large number of flavors. An extrapolation of the QED result to QCD implies that the large distance behavior of the quark potential is arbitrary in perturbation theory, as there are an infinite number of prescriptions to assign. The shape of the potential at large distances is not only affected by the renormalon pole closest to the origin of the Borel plane, but a resummation of all renormalon contributions is required. In particular, confinement can be accommodated, but it is not explained. At short distances there is no indication of a linear term in the potential.