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

Chiral magnetic currents with QGP medium response in heavy-ion collisions at RHIC and LHC energies
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RHIC 和 LHC 能量重离子碰撞中具有 QGP 介质响应的手性磁流

DOI:
10.1140/epja/i2018-12481-x
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发表时间:
2017-09
影响因子:
2.7
通讯作者:
Feng SQ
Feng SQ
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
She Duan;Feng Sheng-Qin;Zhong Yang;Feng Sheng-Qin;Yin Zhong-Bao;Feng SQ;Feng SQ

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在RHIC能区和LHC能区,我们用一种更符合实际的方法计算了电磁电流。我们将部分子形成时间作为QGP介质磁场响应的初始时间。最大电磁电流和时间积分电流是手征磁效应的两个重要特征,可以用来表征手征磁效应涨落的强度和持续时间。我们考虑了CME对时变磁场的有限频率响应,发现了QGP介质反馈的显著影响,并估计了产生的电磁电流作为时间、束流能量和碰撞参数的函数。
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.
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