Chiral magnetic currents with QGP medium response in heavy ion collisions at RHIC and LHC energies

TL;DR

This paper models the chiral magnetic effect in heavy ion collisions, incorporating realistic QGP medium response and finite frequency effects to better understand electromagnetic currents at RHIC and LHC energies.

Contribution

It introduces a more realistic approach to calculating CME currents by including QGP medium feedback and finite frequency response effects.

Findings

QGP medium feedback significantly impacts CME current estimates

The maximum electromagnetic current varies with beam energy and impact parameter

Finite frequency response alters the CME current dynamics

Abstract

We calculate the electromagnetic current with a more realistic approach in the RHIC and LHC energy regions in the article. We take the partons formation time as the initial time of the magnetic field response of QGP medium. The maximum electromagnetic current and the time-integrated current are two important characteristics of the chiral magnetic effect (CME), which can characterize the intensity and duration of fluctuations of CME. We consider the finite frequency response of CME to a time-varying magnetic field, find a significant impact from QGP medium feedback, and estimate the generated electromagnetic current as a function of time, beam energy and impact parameter.