Deconfinement and Chiral Symmetry Restoration in a Strong Magnetic Background
Deconfinement and Chiral Symmetry Restoration in a Strong Magnetic Background
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DOI：
10.1103/physrevd.83.034016
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发表时间：
2010-12
影响因子：
5
通讯作者：
R. Gatto;M. Ruggieri
中科院分区：
文献类型：
--
作者：
R. Gatto;M. Ruggieri
我们在强磁背景下进行了解定义和手性对称恢复的模型研究。我们使用带有Polyakov环的Nambu-Jona-Lasinio模型，考虑到耦合对Polyakov环期望值的可能依赖，正如最近的文献所建议的那样。我们的主要结果是，在该模型中，强磁场中QCD的解定义和手性交叉即使在这里考虑的最大eB值eB=30m{sub {pi}}{sup 2}（即B{approx_equal}6x10{sup 15} T）处也存在纠缠。我们测量的分裂量，在这个eB值下，大约是2%我们还简要地研究了8夸克项对两个交叉的纠缠的作用。然后，我们将该模型的相图与先前的结果以及可用的晶格数据进行比较。
We perform a model study of deconfinement and chiral symmetry restoration in a strong magnetic background. We use a Nambu-Jona-Lasinio model with the Polyakov loop, taking into account a possible dependence of the coupling on the Polyakov-loop expectation value, as suggested by the recent literature. Our main result is that, within this model, the deconfinement and chiral crossovers of QCD in strong magnetic field are entangled even at the largest value of eB considered here, namely eB=30m{sub {pi}}{sup 2} (that is, B{approx_equal}6x10{sup 15} T). The amount of split that we measure is, at this value of eB, of the order of 2%. We also study briefly the role of the 8-quark term on the entanglement of the two crossovers. We then compare the phase diagram of this model with previous results, as well as with available lattice data.