The polarized charge distribution induced by a fast parton in the viscous quark-gluon plasma

被引：13

作者：

Jiang, Bing-feng ^{[1
]}

Li, Jia-rong ^{[2
]}

机构：

[1] Hubei Inst Nationalities, Sch Math & Phys Sci, Enshi 445000, Hubei, Peoples R China

[2] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 02期

基金：

中国国家自然科学基金;

关键词：

COLLABORATION; PERSPECTIVE; COLLISIONS; MATTER; FLOW;

D O I：

10.1088/0954-3899/39/2/025007

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：

With the dielectric function derived from the chromohydrodynamic approach, we investigate the polarized charge distribution induced by a fast parton traveling through the viscous quark-gluon plasma. Our results show that viscous effects on the induced color charge density are speed dependent. When the fast parton moves with a speed less than the average speed of plasmon in the quark-gluon plasma, shear viscosity has a trivial impact on the color charge wake. While the fast parton speed is larger than the plasmon speed, viscous effects modify the strength and structure of the induced charge wake significantly. With the increase of eta/s, shear viscosity enhances the oscillation of the induced charge density, but makes the cone angle formed by the polarized charges less remarkable.

引用

页数：10

共 48 条

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