Quenching the CME via the gravitational anomaly and holography

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.

arXiv comment5 pages, 6 figures

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• Shear flows in far-from-equilibrium strongly coupled fluids
• Holographic Non-equilibrium Heating
• Out of equilibrium chiral magnetic effect and momentum relaxation in holography
• Out of equilibrium Chiral Vortical Effect in Holography
• Non-equilibrium dynamics in Holography
• Membrane paradigm and RG flows for anomalous holographic theories
• Far from equilibrium Chiral Magnetic Effect in Strong Magnetic Fields from Holography
• Analogous BMS Symmetry in QED and Quantum Anomaly in Dirac and Weyl Semimetals