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Chiral magnetic effect in the presence of an external axial-vector field

机译:存在外部轴向矢量场时的手性磁效应

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We study the excitation of the electric current of chiral fermions along the external magnetic field, known as the chiral magnetic effect, in the presence of the background axial-vector field. The calculation of the current is based on the exact solution of the Dirac equation for these fermions accounting for the external fields. First, this solution was obtained for massive particles and, then, we consider the chiral limit, which is used in the anomalous current computation. We obtain that, in this situation, the anomalous current does not contain the direct contribution of the axial-vector field. This result is compared with findings of other authors.
机译:在背景轴向矢量场的情况下,我们研究了手性费米子电流沿着外部磁场的激发,称为手性磁效应。电流的计算基于狄拉克方程对这些费米子的精确解,并考虑了外部场。首先,针对块状粒子获得此解决方案,然后考虑手性极限,该极限用于异常电流计算。我们得到在这种情况下,异常电流不包含轴向矢量场的直接贡献。将该结果与其他作者的发现进行了比较。

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