What flows in the chiral magnetic effect? -- Simulating the particle production with CP-breaking backgrounds

Abstract

To address a question of whether the chiral magnetic current is a static polarization or a genuine flow of charged particles, we elucidate the numerical formulation to simulate the net production of right-handed particles and anomalous currents with CP-breaking background fields which cause an imbalance between particles and anti-particles. For a concrete demonstration we numerically impose pulsed electric and magnetic fields to confirm our answer to the question that the produced net particles flow in the dynamical chiral magnetic effect. The rate for the particle production and the chiral magnetic current generation is quantitatively consistent with the axial anomaly, while they appear with a finite response time. We emphasize the importance to quantify the response time that would suppress observable effects of the anomalous current.

8 pages, 6 figures; trivial typos corrected, a version that appears in PRD

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• The Chiral Magnetic Effect
• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Some Features of the Glasma
• Chiral Magnetic conductivity
• Chiral anomaly and local polarization effect from quantum kinetic approach
• Chiral magnetic effect in lattice QCD with a chiral chemical potential
• Chemical thermalization in relativistic heavy ion collisions
• Quark-antiquark production from classical fields in heavy ion collisions: 1+1 dimensions
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• Heavy Quark Diffusion in Strong Magnetic Fields at Weak Coupling and Implications for Elliptic Flow
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• Holographic quenches and anomalous transport
• Out-of-Equilibrium Chiral Magnetic Effect from Chiral Kinetic Theory
• Axial Ward identity and the Schwinger mechanism -- Applications to the real-time chiral magnetic effect and condensates
• Numerical study of chiral plasma instability within the classical statistical field theory approach
• Chiral vortical effect with finite rotation, temperature, and curvature
• Evolution to the Quark-Gluon Plasma
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
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• Chiral Magnetic Effect in Heavy Ion Collisions
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• Study on axial fields in the dynamically assisted Schwinger effect