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arXiv 2303.02145hep-thmath-phmath.MPquant-ph
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有限温度场论的路径积分形式和手征电流的产生

Path integral formalism for finite-temperature field theory and generation of chiral currents

Yurii A. Sitenko

摘要:

利用有限温度场论的路径积分形式,我发现了量子手征费米子系统中产生的持续矢量流和轴向流。阐明了费米子质量对手征对称性的显式破坏的作用。对于任意光滑磁场背景下的量子费米子系统的情况,我证明了手征磁效应和手征分离效应是同样成立的。如果质量违反了手征对称性,这两种效应都保持不变。

英文摘要:

With the use of the path integral formalism for finite-temperature field theory, I find the persisting vector and axial currents that are generated in quantum chiral fermionic systems. The role of the explicit violation of chiral symmetry by fermion mass is elucidated. For the case of quantum fermionic systems in the backround of an arbitrary smooth magnetic field, I show that the chiral magnetic effect is substantiated on equally the same footing as the chiral separation effect is. Both effects remain unaltered if chiral symmetry is violated by mass.

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