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arXiv 1010.4467hep-phhep-lat
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双味QCD的夸克质量依赖性

Quark mass dependence of two-flavor QCD

Michael Creutz

摘要:

我探索丰富的双味QCD作为夸克质量的函数的相图。该理论涉及三个参数,其中一个参数是CP破坏。随着质量的变化,预计会出现一级和二级跃迁区域。对于非简并夸克,非微扰效应不再是普遍的,只留下单个夸克的质量比依赖于重整化方案。这增加了复杂的匹配晶格结果与微扰计划,并证明了重言式攻击强CP问题通过消失的上夸克质量。

英文摘要:

I explore the rich phase diagram of two-flavor QCD as a function of the quark masses. The theory involves three parameters, including one that is CP violating. As the masses vary, regions of both first and second order transitions are expected. For non-degenerate quarks, non-perturbative effects cease to be universal, leaving individual quark mass ratios with a renormalization scheme dependence. This raises complications in matching lattice results with perturbative schemes and demonstrates the tautology of attacking the strong CP problem via a vanishing up quark mass.

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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