Quantifying the chiral magnetic effect from anomalous-viscous fluid dynamics

被引：76
作者：
Jiang, Yin [1 ,2 ]
Shi, Shuzhe [3 ]
Yin, Yi [4 ]
Liao, Jinfeng [3 ,5 ,6 ]
机构：
[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China
[2] Indiana Univ, Phys Dept, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA
[3] Indiana Univ, Ctr Explorat Energy & Matter, 2401 N Milo B Sampson Lane, Bloomington, IN 47408 USA
[4] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
[5] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China
[6] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China
来源：
CHINESE PHYSICS C | 2018年 / 42卷 / 01期
基金：
美国国家科学基金会;
关键词：
heavy ion collision; quark gluon plasma; chiral magnetic effect; chiral symmetry; HEAVY-ION COLLISIONS; CHARGE SEPARATION; VIOLATION; FIELD; QCD;
D O I：
10.1088/1674-1137/42/1/011001
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The Chiral Magnetic Effect (CME) is a macroscopic manifestation of fundamental chiral anomaly in a many-body system of chiral fermions, and emerges as an anomalous transport current in the fluid dynamics framework. Experimental observation of the CME is of great interest and has been reported in Dirac and Weyl semimetals. Significant efforts have also been made to look for the CME in heavy ion collisions. Critically needed for such a search is the theoretical prediction for the CME signal. In this paper we report a first quantitative modeling framework, Anomalous Viscous Fluid Dynamics (AVFD), which computes the evolution of fermion currents on top of realistic bulk evolution in heavy ion collisions and simultaneously accounts for both anomalous and normal viscous transport effects. AVFD allows a quantitative understanding of the generation and evolution of CME-induced charge separation during the hydrodynamic stage, as well as its dependence on theoretical ingredients. With reasonable estimates of key parameters, the AVFD simulations provide the first phenomenologically successful explanation of the measured signal in 200 AGeV AuAu collisions.
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