论文标题
伪PPT对称的狄拉克方程：新的平均旋转角动量操作员对吉尔伯特抑制的影响
Pseudo-PT symmetric Dirac equation : effect of a new mean spin angular momentum operator on Gilbert damping
论文作者
论文摘要
伪PPT对称的狄拉克方程是通过使用非单身的折叠式杜松子转换来分析和分析的。获得了与时间依赖性电磁场相互作用的电子相互作用的新的自旋算子PT对称性期望值（称为平均自旋算子）。我们表明，自旋磁化（通常是实验测量的数量）不是由标准旋转操作员来描述的，而是由这种新的平均旋转操作员描述的，可以正确描述铁磁材料中的磁化动力学，相应的运动方程与Landau -lifshitz -lifshitz -gilbert方程（LLG）的现象学模型兼容。
The pseudo-PT symmetric Dirac equation is proposed and analyzed by using a non-unitary Foldy-Wouthuysen transformations. A new spin operator PT symmetric expectation value (called the mean spin operator) for an electron interacting with a time-dependent electromagnetic field is obtained. We show that spin magnetization - which is the quantity usually measured experimentally - is not described by the standard spin operator but by this new mean spin operator to properly describe magnetization dynamics in ferromagnetic materials and the corresponding equation of motion is compatible with the phenomenological model of the Landau-Lifshitz-Gilbert equation (LLG).
