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arXiv 0710.1655hep-lat
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用2+1味夸克精确测定Tc

Toward a precise determination of Tc with 2+1 flavors of quarks

Carleton DeTar, Rajan Gupta

摘要:

我们提出了一个新的高统计研究的全QCD在零化学势的高温转变的状态报告。我们的模拟使用了改进的asqtad和p4交错夸克,时间范围N_t = 8,轻夸克质量约为奇异夸克质量的十分之一。在这份报告中,我们描述了我们的计算设置,并提出了一个初步分析的各种来源的系统误差和模糊度的交叉温度的测定。我们建议用目前统计数据的两倍来提出我们的最终分析。这些计算是在劳伦斯利弗莫尔国家实验室的IBM BlueGene/L超级计算机上进行的。

英文摘要:

We present a status report on a new high statistics study of the high temperature transition in full QCD at zero chemical potential. Our simulations use both improved asqtad and p4 staggered quarks on lattices with a temporal extent N_t = 8 and light quark masses approximately one tenth the strange quark mass. In this report we describe the setup of our calculations and present a preliminary analysis of a variety of sources of systematic error and ambiguity in the determination of the crossover temperature. We propose to present our final analysis with double the current statistics. These calculations were carried out on the IBM BlueGene/L supercomputer at Lawrence Livermore National Laboratory.

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