论文标题
热和密集的QCD物质的手性转变和手性电荷密度
Chiral transition and the chiral charge density of the hot and dense QCD matter
论文作者
论文摘要
我们通过Dyson-Schinginger方程（DSES）研究手性不平衡的热和密集的强烈相互作用的物质。在存在手性化学势$μ_5$的情况下，研究了手性相图。手性夸克冷凝物$ \ langle \barψ\ rangle $是通过与彩虹截断的Cornwall-Jackiw-Tomboulis（CJT）有效的有效动作获得的。观察到动态性手性对称性破坏（DCSB）的催化效应被观察到$μ_5$。我们使用两个流行的Gluon模型检查，并且在DSE方法中发现了一致性，以及与晶格QCD相比。 CEP位置$（μ_e，t_e）$转向较大的$ t_e $，但consance $μ_e$ as $μ__5$增加。然后引入一项技术来计算整体夸克传播器的手性电荷密度$ n_5 $。我们发现$ n_5 $通常会随温度$ t $，Quark Number的化学势$μ$和$μ__________________________________ER。由于通常使用外围碰撞进行手性磁效应（CME），因此我们还研究了对$ N_5 $的有限尺寸效应，并发现$ N_5 $增加的系统尺寸较小。
We study the chirally imbalanced hot and dense strongly interacting matter by means of the Dyson-Schwinger equations (DSEs). The chiral phase diagram is studied in the presence of chiral chemical potential $μ_5$. The chiral quark condensate $\langle \barψ ψ\rangle$ is obtained with the Cornwall-Jackiw-Tomboulis (CJT) effective action in concert with the Rainbow truncation. Catalysis effect of dynamical chiral symmetry breaking (DCSB) by $μ_5$ is observed. We examine with two popular gluon models and consistency is found within the DSE approach, as well as in comparison with lattice QCD. The CEP location $(μ_E,T_E)$ shifts toward larger $T_E$ but constant $μ_E$ as $μ_5$ increases. A technique is then introduced to compute the chiral charge density $n_5$ from the fully dressed quark propagator. We find the $n_5$ generally increases with temperature $T$, quark number chemical potential $μ$ and $μ_5$. Since the chiral magnetic effect (CME) is typically investigated with peripheral collisions, we also investigate the finite size effect on $n_5$ and find an increase in $n_5$ with smaller system size.
