Numerical evidence of chiral magnetic effect in lattice gauge theory

By P. Buividovich, M. Chernodub, E. Luschevskaya, M. Polikarpov. 2009

176 citations recorded by the source corpus.

The chiral magnetic effect is the generation of electric current of quarks along an external magnetic field in the background of topologically nontrivial gluon fields. There is recent evidence that this effect is observed by the STAR Collaboration in heavy-ion collisions at the Relativistic Heavy Ion Collider. In our paper we study qualitative signatures of the chiral magnetic effect using quenched lattice simulations. We find indications that the electric current is indeed enhanced in the direction of the magnetic field both in equilibrium configurations of the quantum gluon fields and in a smooth gluon background with nonzero topological charge. In the confinement phase the magnetic field enhances the local fluctuations of both the electric charge and chiral charge densities. In the deconfinement phase the effects of the magnetic field become smaller, possibly due to thermal screening. Using a simple model of a fireball we obtain a good agreement between our data and experimental results of STAR Collaboration.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/e4aadca4ffd2cb0838b0f70c7c72e54a785a8cdf

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In Nuclear and High Energy Physics

Citations in the corpus

Holographic gravitational anomaly and chiral vortical effect (2011, methodology): “Studies of the chiral magnetic effect using holography have appeared in [19–27] and using lattice field theory in [28–30].”