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arXiv 1106.3576hep-thcond-mat.supr-conhep-ph
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超流体中的反常现象与手征电效应

Anomalies in Superfluids and a Chiral Electric Effect

Yasha Neiman, Yaron Oz

摘要:

我们分析了相对论超流流体力学中的手征输运项。除了自发破缺对称电流,我们考虑了任意数量的未破缺对称,并扩展了arXiv:1105.3733的结果。我们建议的手征和重力异常的一些新的传输系数的解释。特别是,我们表明,在系统中的完整的规范电荷,可以观察到一个手性电导率-在一个垂直的方向上施加的电场的电流。我们提出了一个有动机的建议,相关的输运系数的值,将其连接到三角形异常。一路上,我们提出了新的参数解释正常流体中的异常输运系数。我们提出了一个自然的推广的手征运输条款的情况下,任意数量的自发破缺对称电流。

英文摘要:

We analyze the chiral transport terms in relativistic superfluid hydrodynamics. In addition to the spontaneously broken symmetry current, we consider an arbitrary number of unbroken symmetries and extend the results of arXiv:1105.3733. We suggest an interpretation of some of the new transport coefficients in terms of chiral and gravitational anomalies. In particular, we show that with unbroken gauged charges in the system, one can observe a chiral electric conductivity - a current in a perpendicular direction to the applied electric field. We present a motivated proposal for the value of the associated transport coefficient, linking it to the triangle anomaly. Along the way we present new arguments regarding the interpretation of the anomalous transport coefficients in normal fluids. We propose a natural generalization of the chiral transport terms to the case of an arbitrary number of spontaneously broken symmetry currents.

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