非磁化非均匀冷等离子体中的Berry效应
Berry Effect in Unmagnetized Inhomogeneous Cold Plasmas
摘要：
研究了电磁波在非磁化弱非均匀冷等离子体中的传播。结果表明，在后几何光学近似下，非均匀性在波动方程中引入了规范连接项，从而导致了偏振光动力学中的Berry效应。平面偏振光线的偏振面由于几何Berry相位而旋转，这是Rytov旋转。此外，Berry曲率导致光学霍尔效应，根据该效应，左/右圆偏振的射线相反地偏转以产生与传播方向交叉的自旋电流。
英文摘要：
The propagation of electromagnetic waves in an unmagnetized weakly inhomogeneous cold plasma is examined. We show that the inhomogeneity induces a gauge connection term in wave equation, which gives rise to Berry effects in the dynamics of polarized rays in the post geometric optics approximation. The polarization plane of a plane polarized ray rotates as a result of the geometric Berry phase, which is the Rytov rotation. Also, the Berry curvature causes the optical Hall effect, according to which, rays of left/right circular polarization deflect oppositely to produce a spin current directed across the direction of propagation.
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