论文标题
手性质的异常散射和运输
Anomalous scattering and transport in chiral matter
论文作者
论文摘要
手性异常修改了手性系统中的散射过程，这些过程可以使用麦克斯韦 - 切尔恩 - 塞蒙斯理论来计算，该理论将电动力学与伪内科场$θ$相结合，描述了拓扑电荷引起的外部来源。假设拓扑电荷密度的缓慢变化，则在天生的近似中计算费米昂散射横截面，并发现在与手性电导率成正比的散射角度具有共振。结果，在高温下抑制了运输系数。横截面的各向异性是由于拓扑电荷的空间变化而产生的。讨论了它对电导率的影响。
Chiral anomaly modifies the scattering processes in chiral systems which can be computed using the Maxwell-Chern-Simons theory that couples electrodynamics to the pseudoscalar field $θ$ describing the topological charge induced be external sources. Assuming slow variation of the topological charge density, the fermion scattering cross section is computed in the Born approximation and is found to have a resonance at the scattering angles proportional to the chiral conductivity. As a result, the transport coefficients are suppressed at high temperatures. The anisotropy of the cross section arises due to the spatial variation of the topological charge; its effect on the electrical conductivity is discussed.
