论文标题
通过缓慢旋转费米子的同步辐射
Synchrotron radiation by slowly rotating fermions
论文作者
论文摘要
我们研究了由带电的费米昂发出的同步子辐射，在较大系统的一部分中旋转，在恒定的磁场$ b $与旋转轴平行的情况下。旋转是经典的，与磁场无关。假定旋转$ω$的角速度比反磁长$ \ sqrt {qb} $小得多，这使我们能够忽略以$ r = 1/ω$的边界效应。我们将这种旋转称为缓慢的，即使以绝对值为单位，它可能是一个非常快速的旋转。使用狄拉克方程的精确溶液，我们得出了电磁辐射的强度，频谱和手性。我们通过显式数值计算证明，旋转对辐射强度的影响随粒子能量增加。根据向量的相对取向$ \bfΩ$和$ \ bf b $以及电荷的迹象，旋转可以强烈增强或强烈抑制辐射。
We study the synchrotron radiation emitted by a charged fermion, rotating as a part of a larger system, in a constant magnetic field $B$ parallel to the axis of rotation. The rotation is classical and independent of the magnetic field. The angular velocity of rotation $Ω$ is assumed to be much smaller than the inverse magnetic length $\sqrt{qB}$ which allows us to ignore the boundary effects at $r=1/Ω$. We refer to such rotation as slow, even though in absolute value it may be an extremely rapid rotation. Using the exact solution of the Dirac equation we derived the intensity of electromagnetic radiation, its spectrum and chirality. We demonstrate by explicit numerical calculation that the effect of rotation on the radiation intensity increases with the particle energy. Depending on the relative orientation of the vectors $\bfΩ$ and $\bf B$ and the sign of the electric charge, the rotation can either strongly enhance or strongly suppress the radiation.
