论文标题
从晶格QCD结果限制夸克异常磁矩的形式结果
Restriction on the form of quark anomalous magnetic moment from lattice QCD results
论文作者
论文摘要
夸克异常磁矩（AMM）通过自发的手性对称性破裂动态生成。已经揭示了，即使其确切形式仍然未知，夸克AMM对于探索夸克物质特性和QCD相结构至关重要。在这项研究中，我们采用了三种不同形式的夸克AMM，并研究了其对磁场下手性相变的影响。通常，负夸克AMM作为磁性催化剂起作用，正夸克AMM扮演磁抑制作用。发现恒定的夸克AMM驱动了意外的一阶手性相变。与手性冷凝物成正比的夸克AMM在手性冷凝物上的符号翻转；与手性冷凝物正方形成正比的夸克AMM可以产生手性冷凝物的结果，作为温度的功能和磁场与晶格结果非常吻合。
The quark anomalous magnetic moment (AMM) is dynamically generated through the spontaneous chiral symmetry breaking. It has been revealed that even though its exact form is still unknown, the quark AMM is essential to explore quark matter properties and QCD phase structure under external magnetic fields. In this study, we take three different forms of the quark AMM and investigate its influence on the chiral phase transition under magnetic field. In general, a negative quark AMM plays the role as magnetic catalyzer and a positive quark AMM plays the role of magnetic inhibition. It is found that a constant quark AMM drives an unexpected 1st order chiral phase transition; a quark AMM proportional to the chiral condensate gives a flip of the sign on the chiral condensate; and a quark AMM proportional to the square of chiral condensate can produce results of chiral condensate as functions of the temperature and the magnetic field in good agreement with the lattice result.
