Axial Current Generation by $\mathcal{P}$-Odd Domains in QCD Matter

Axial Current Generation by $P$ -Odd Domains in QCD Matter

Ioannis Iatrakis, Shu Lin, and Yi Yin

Phys. Rev. Lett. 114, 252301 – Published 23 June 2015

Abstract

The dynamics of topological domains which break parity ( $P$ ) and charge-parity ( $C P$ ) symmetry of QCD are studied. We derive in a general setting that those local domains will generate an axial current and quantify the strength of the induced axial current. Our findings are verified in a top-down holographic model. The relation between the real time dynamics of those local domains and the chiral magnetic field is also elucidated. We finally argue that such an induced axial current would be phenomenologically important in a heavy-ion collisions experiment.

Received 14 November 2014

DOI:https://doi.org/10.1103/PhysRevLett.114.252301

Authors & Affiliations

Ioannis Iatrakis^1,*, Shu Lin^2,†, and Yi Yin^3,‡

¹Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
²RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
³Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA