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arXiv 1809.08181hep-phcond-mat.mes-hallnucl-th
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各向异性物质中的手征切伦科夫和手征跃迁辐射

Chiral Cherenkov and chiral transition radiation in anisotropic matter

Kirill Tuchin

摘要:

在各向异性手征物质中快速运动的电荷对电磁辐射的重要贡献来自手征反常引起的自发光子辐射。虽然这样的过程,也被称为“真空切伦科夫辐射”,在QED真空中是禁止的,但它可以发生在手性物质中,在那里称之为“手性切伦科夫辐射”更合适。与韧致辐射的$α^3$相比,它对辐射光谱的贡献为$α^2$级。我推导出了这种辐射在高能极限下的频谱和角分布。考虑了由于硬光子发射和费米子质量引起的量子效应。在夸克-胶子等离子体和Weyl半金属的情况下分析了所得到的光谱。

英文摘要:

A significant contribution to the electromagnetic radiation by a fast electric charge moving in anisotropic chiral matter arises from spontaneous photon radiation due to the chiral anomaly. While such a process, also known as the "vacuum Cherenkov radiation", is forbidden in the QED vacuum, it can occur in chiral matter, where it is more appropriate to call it the "chiral Cherenkov radiation". Its contribution to the radiation spectrum is of order $α^2$ compared to $α^3$ of the bremsstrahlung. I derive the frequency spectrum and the angular distribution of this radiation in the high energy limit. The quantum effects due to the hard photon emission and the fermion mass are taken into account. The obtained spectra are analyzed in the case the quark-gluon plasma and a Weyl semimetal.

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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