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arXiv 2202.12437hep-thcond-mat.mes-hall
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Euler流体和Beltrami流中的手征Anomaly

Chiral Anomaly in Euler Fluid and Beltrami Flow

P. B. Wiegmann, A. G. Abanov

摘要:

我们证明了具有狄拉克费米子的量子场论的手征反常是理想经典流体运动学的一个固有性质。著名的贝尔特拉米流(具有广泛螺旋性的欧拉方程的定态解)表现出与狄拉克费米子相当的手征反常。手征反常的一个显著影响是平衡时的传输电流。我们表明,它也是Beltrami流的一个属性。

英文摘要:

We show that the chiral anomaly of quantum field theories with Dirac fermions subject to an axial background field is an inherent property of kinematics of a perfect classical fluid. Celebrated Beltrami flows (stationary solutions of Euler equations with extensive helicity) exhibit the chiral anomaly equivalent to that known for Dirac fermions. A prominent effect of the chiral anomaly is the transport electric current at equilibrium. We show that it is also a property of Beltrami flows.

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