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arXiv 1703.02483hep-thhep-phnucl-th
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反常输运与广义轴向电荷

Anomalous Transport and Generalized Axial Charge

Vladimir P. Kirilin, Andrey V. Sadofyev

摘要:

本文继续研究了宏观螺旋度对手征介质中轴电荷的修正。最近的研究表明,磁重联导致沿磁通管的零模持续电流。在这里,我们认为,在一般的广义轴向电荷的螺旋部分的变化结果在相同的现象。因此,可以说,有一个新的实现手性效应不需要初始手性不对称。在一个基于手征超流中涡旋重联的玩具模型中,分析了流动螺旋度到零模的转换。然后,以磁螺旋度为例,讨论了重联效应和手征不稳定性之间的平衡。我们认为,在一般情况下,有一种可能性之间的磁和费米子形式的不稳定性结束时的轴向电荷的分布。

英文摘要:

In this paper we continue studying the modification of the axial charge in chiral media by macroscopic helicities. Recently it was shown that magnetic reconnections result in a persistent current of zero mode along flux tubes. Here we argue that in general a change in the helical part of the generalized axial charge results in the same phenomenon. Thus one may say that there is a novel realization of chiral effects requiring no initial chiral asymmetry. The transfer of flow helicity to zero modes is analyzed in a toy model based on a vortex reconnection in a chiral superfluid. Then, we discuss the balance between the two competing processes effect of reconnections and the chiral instability on the example of magnetic helicity. We argue that in the general case there is a possibility for the distribution of the axial charge between the magnetic and fermionic forms at the end of the instability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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