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arXiv 1304.4571hep-phhep-lat
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存在磁场时夸克质量对QCD phase diagram的影响

Influence of quark masses on the QCD phase diagram in the presence of a magnetic field

Ana Julia Mizher

摘要:

在强磁场存在下,最近的晶格QCD相图的结果强烈不同意从以前的晶格模拟和几个模型计算的结果。最显着的区别是定性行为的临界温度的函数的磁场强度,这在后来的结果被证明是减少在反对以前发现的。根据作者的说法,晶格模拟中的这种差异可能是由于不同的晶格间距,或者不同数量的味道和夸克质量。我们研究了夸克质量对Polyakov-Quark-Meson模型的影响,结果表明,虽然定量结果对这些参数敏感,但定性行为保持不变。

英文摘要:

The most recent lattice results on the QCD phase diagram in the presence of a strong magnetic field strongly disagree with results from previous lattice simulations and several model calculations. The most remarkable difference is the qualitative behavior of the critical temperature as a function of the magnetic field intensity, which in later results are shown to decrease in opposition to what was found previously. According to the authors, such a discrepancy in lattice simulations could be due to different lattice spacing, or different number of flavors and quark masses. We investigate the influence of quark masses on the Polyakov- Quark-Meson model and show that, although quantitatively the results are sensitive to those parameters, the qualitative behavior remains the same.

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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