Brodin Gert, Al-Naseri Haidar
Department of Physics, <a href="https://ror.org/05kb8h459">Umeå University</a>, SE-901 87 Umeå, Sweden.
Stanford PULSE Institute, <a href="https://ror.org/05gzmn429">SLAC National Accelerator Laboratory</a>, Menlo Park, California 94025, USA.
Phys Rev E. 2024 Jul;110(1-2):015204. doi: 10.1103/PhysRevE.110.015204.
We use a recently developed a kinetic model derived from the Dirac equation to study electromagnetic wave propagation in superstrong magnetic fields, such as in magnetars, where relativistic Landau quantization is prominent. The leading contribution to the conductivity tensor in such a plasma is calculated. It is found that the electron Hall current has an anomalous contribution, in the quantum relativistic regime, where the effective particle energy has a significant contribution from the diamagnetic and Zeeman energy. As a result, a new quantum resonance frequency appears, and the dispersion relation for the left- and right-hand polarized modes are strongly modified for long and moderate wavelengths. The implications for magnetar physics are discussed.
我们使用最近从狄拉克方程推导出来的动力学模型，来研究超强磁场（如磁星中的磁场，其中相对论性朗道量子化很显著）中的电磁波传播。计算了这种等离子体中电导率张量的主要贡献。结果发现，在量子相对论区域，电子霍尔电流有反常贡献，其中有效粒子能量有来自抗磁能和塞曼能的显著贡献。因此，出现了一个新的量子共振频率，并且对于长波长和中等波长，左旋和右旋极化模式的色散关系被强烈修改。讨论了其对磁星物理学的影响。
