论文标题
QCD物质和pion质量的磁性浓度型自旋极化和夸克异常磁矩
Magnetism of QCD matter and pion mass from tensor-type spin polarization and anomalous magnetic moment of quarks
论文作者
论文摘要
我们研究了磁场下QCD物质和PION质量的磁性，考虑到张量型自旋极化和夸克异常磁矩（AMM）的贡献。发现张量型自旋极化（TSP）在低温下诱导了夸克物质的手性冷凝物和Diamagnetism（负磁敏感性）的磁催化，中性和带电的Pion质量在TSP的情况下随着磁场而迅速增加。夸克的异常磁矩（AMM）诱导磁性抑制作用，磁性依赖性AMM在有限温度下引起逆磁催化，而中性胎胎质量随磁场而降低，而带电的PION质量质量表现出与磁场的非单调行为，这与与晶格的结果有定性。但是，使用AMM在低温下磁敏感性为正。在当前的框架中，我们的结果表明，磁磁性和磁催化局部分析之间存在不可调和的矛盾。
We investigate the magnetism of QCD matter and pion mass under magnetic field considering the contribution from the tensor-type spin polarization and the anomalous magnetic moment (AMM) of quarks. It is found that the tensor-type spin polarization (TSP) induces the magnetic catalysis of chiral condensate and diamagnetism (negative magnetic susceptibility) of quark matter at low temperature, both neutral and charged pion masses increase quickly with magnetic field in the case of TSP. The anomalous magnetic moment (AMM) of quarks induces magnetic inhibition and a magnetic dependent AMM causes inverse magnetic catalysis at finite temperature, and the neutral pion mass decreases with magnetic field while the charged pion mass shows nonmonotonic behavior with the magnetic field, which is qualitatively in agreement with lattice result. However, the magnetic susceptibility is positive at low temperature with AMM. In the current framework, our results show the irreconcilable contradiction between the diamagnetism and inverse magnetic catalysis.
