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arXiv · 1709.08384

Quenching the CME via the gravitational anomaly and holography

Karl Landsteiner·Esperanza Lopez·Guillermo Milans del Bosch
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Abstract

In the presence of a gravitational contribution to the chiral anomaly, the chiral magnetic effect induces an energy current proportional to the square of the temperature in equilibrium. In holography the thermal state corresponds to a black hole. We numerically study holographic quenches in which a planar shell of scalar matter falls into a black hole and rises its temperature. During the process the momentum density (energy current) is conserved. The energy current has two components, a non-dissipative one induced by the anomaly and a dissipative flow component. The dissipative component can be measured via the drag it asserts on an additional auxiliary color charge. Our results indicate strong suppression very far from equilibrium.

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Karl Landsteiner, Esperanza Lopez, Guillermo Milans del Bosch. 2017-09-25. Quenching the CME via the gravitational anomaly and holography. https://doi.org/10.1103/physrevlett.120.071602

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