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arXiv 0910.5482hep-lat
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夸克数和手征凝聚的涨落

The Fluctuations of the Quark Number and of the Chiral Condensate

M. P. Lombardo, K. Splittorff, J. J. M. Verbaarschot

摘要:

在非零夸克化学势下,计算了欧氏空间QCD中夸克数和手征凝聚在规范场上的分布。由于这两个算子都是非厄米的,所以分布在复平面上。此外,由于符号问题,分布不是真实的和正的。的计算进行内的领先阶手征微扰理论,并给出了直接洞察微妙的取消发生的贡献的总重子数和手征凝聚。

英文摘要:

The distributions of the quark number and chiral condensate over the gauge fields are computed for QCD in Euclidean space at nonzero quark chemical potential. As both operators are non-hermitian the distributions are in the complex plane. Moreover, because of the sign problem, the distributions are not real and positive. The computations are carried out within leading order chiral perturbation theory and give a direct insight into the delicate cancellations that take place in contributions to the total baryon number and the chiral condensate.

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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