论文标题
QCD拓扑配有电磁场和轴突耦合
QCD topology with electromagnetic fields and the axion-photon coupling
论文作者
论文摘要
QCD真空中非正交电场和磁场的引入可增强拓扑领域的重量，并具有非零拓扑电荷。对于弱场，拓扑电荷的期望值有线性响应。我们研究了这种线性响应，并将其与QCD校正与轴 - 光子耦合有关。我们还分析了在$ t_c $左右的一系列温度中拓扑敏感性的磁场依赖性。在这项工作中，我们使用晶格模拟，并在物理质量（包括背景磁性和（假想）电场）的交错夸克上进行了改进。
The introduction of non-orthogonal electric and magnetic fields in the QCD vacuum enhances the weight of topological sectors with a nonzero topological charge. For weak fields, there is a linear response for the expectation value of the topological charge. We study this linear response and relate it to the QCD correction to the axion-photon coupling. We also analyse the magnetic field dependence of the topological susceptibility for a range of temperatures around $T_c$. In this work we use lattice simulations with improved staggered quarks at physical masses, including background magnetic and (imaginary) electric fields.
