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arXiv 1702.07340hep-thnucl-th
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玻色子的手征涡效应

Chiral Vortical Effect for Bosons

Artur Avkhadiev, Andrey V. Sadofyev

摘要:

手征涡效应的热贡献与外引力场的轴向异常有关。我们利用自旋引力相互作用的普遍性,将这一想法扩展到更广泛的现象。本文研究了弱耦合下矢量场自旋流的Kubo公式,导出了一种新的由介质旋转引起的反常效应:玻色子的手征涡旋效应。这种效应存在于矢量玻色子沿介质角速度的自旋流中。我们认为,它具有相同的异常性质,在费米子的情况下,并表明这种效应提供了一种机制,从流螺旋度的螺旋度磁螺旋度。

英文摘要:

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.

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