arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.2823hep-thhep-ph
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引力Anomaly与流体力学

Gravitational Anomaly and Hydrodynamics

Karl Landsteiner, Eugenio Megias, Luis Melgar, Francisco Pena-Benitez

摘要:

研究了相对论性流体中涡旋通过手征涡旋效应产生的反常感应电流,它类似于磁场通过手征磁效应产生的反常电流.我们在弱耦合和强耦合下进行这种分析。我们讨论了反常对称的化学势的不等价实现。在强耦合下,我们使用一个全息模型,在作用量中有纯规范项和混合规范-引力陈-西蒙斯项。我们讨论了全息重整化,并表明陈-西蒙斯条款不诱导新的分歧。强耦合和弱耦合的结果完全一致。我们还指出,在黑洞的视界上不存在奇异的规范场位形,也可以进行全息计算。

英文摘要:

We study the anomalous induced current of a vortex in a relativistic fluid via the chiral vortical effect, which is analogous to the anomalous current induced by a magnetic field via the chiral magnetic effect. We perform this analysis at weak and strong coupling. We discuss inequivalent implementations to the chemical potential for an anomalous symmetry. At strong coupling we use a holographic model with a pure gauge and mixed gauge-gravitational Chern-Simons term in the action. We discuss the holographic renormalization and show that the Chern-Simons terms do not induce new divergences. Strong and weak coupling results agree precisely. We also point out that the holographic calculation can be done without a singular gauge field configuration on the horizon of the black hole.

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