Chiral vortical effect for bosons
Chiral vortical effect for bosons
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DOI：
10.1103/physrevd.96.045015
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发表时间：
2017-02
影响因子：
5
通讯作者：
A. Avkhadiev;A. Sadofyev
中科院分区：
文献类型：
--
作者：
A. Avkhadiev;A. Sadofyev
热对手性涡效应的贡献被认为与外引力场的轴向异常有关。我们利用自旋-重力相互作用的普适性将这个想法扩展到更广泛的现象。我们考虑弱耦合下矢量场自旋电流的Kubo公式，并推导出介质旋转引起的一种新的反常效应：玻色子的手性涡效应。这种效应包括矢量玻色子沿介质角速度的自旋电流。我们认为它具有与费米子情况相同的异常性质，并表明这种效应提供了一种螺旋度转移的机制，从流螺旋度到磁螺旋度。
The thermal contribution to the chiral vortical effect is believed to be related to the axial anomaly in external gravitational fields. We use the universality of the spin-gravity interaction to extend this idea to a wider set of phenomena. We consider the Kubo formula at weak coupling for the spin current of a vector field and derive a novel anomalous effect caused by the medium rotation: the chiral vortical effect for bosons. The effect consists in a spin current of vector bosons along the angular velocity of the medium. We argue that it has the same anomalous nature as in the fermionic case and show that this effect provides a mechanism for helicity transfer, from flow helicity to magnetic helicity.