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arXiv 1304.2091hep-lat
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有限温度下多味格点量子色动力学的相结构

Phase structure of many flavor lattice QCD at finite temperature

Norikazu Yamada, Shinji Ejiri

摘要:

在现实的包含许多费米子的人工色模型中,电弱重子生成提供了一个产生重子数不对称的自然场景。其中一个关键因素是在有限温度下发生一级相变。作为探索这种可能性的晶格的第一步,我们开发了一种灵活的方法来确定一个给定的Nf的临界质量,分离的第一阶和交叉过渡。我们解释了我们的方法的轮廓,并证明它通过确定的临界质量的NF-口味的存在下,轻两种口味。发现临界质量随Nf的增大而增大。

英文摘要:

In realistic technicolor models containing many fermions, the electroweak baryogenesis offers a natural scenario for generating baryon number asymmetry. One of the key ingredients is the occurrence of the first order phase transition at finite temperature. As a first step toward the exploration of this possibility on the lattice, we develop an agile method to identify the critical mass for a given Nf, separating the first order and the crossover transition. We explain the outline of our method and demonstrate it by determining the critical mass of Nf-flavors in the presence of light two-flavors. It is found that the critical mass becomes larger with Nf.

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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