Axial-Current Anomaly in Euler Fluids
Axial-Current Anomaly in Euler Fluids
复制标题
欧拉流体中的轴向电流异常
DOI：
10.1103/physrevlett.128.054501
复制
发表时间：
2022
影响因子：
8.6
通讯作者：
Wiegmann, P. B.
中科院分区：
文献类型：
--
作者：
Abanov, A. G.;Wiegmann, P. B.
我们认为，经典欧拉流体中出现了与费米子量子场论的轴向电流异常的密切相似。轴向电流的守恒（与无粘正压流的螺旋性密切相关）被外部电磁场异常破坏，如 ∂μjAμ=2E·B，类似于狄拉克费米子量子场论（例如 QED）的轴向电流。
We argue that a close analog of the axial-current anomaly of quantum field theories with fermions occurs in the classical Euler fluid. The conservation of the axial current (closely related to the helicity of inviscid barotropic flow) is anomalously broken by the external electromagnetic field as ∂μjAμ=2E·B, similar to that of the axial current of a quantum field theory with Dirac fermions, such as QED.