Viscosities of gluon dominated QGP model within relativistic non-Abelian hydrodynamics

被引：1

作者：

Djun, T. P. ^{[1
]}

Handoko, L. T. ^{[2
]}

Soegijono, B. ^{[3
]}

Mart, T. ^{[4
]}

机构：

[1] Univ Indonesia, Grad Programs Mat Sci, Jakarta 10430, Indonesia

[2] Indonesian Inst Sci, Res Ctr Phys, Grp Theoret & Computat Phys, Tangerang 15310, Indonesia

[3] Univ Indonesia, Grad Programs Mat Sci, Jakarta 10430, Indonesia

[4] Univ Indonesia, FMIPA, Dept Fis, Depok 16424, Indonesia

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2015年 / 30卷 / 14期

关键词：

Quark-gluon plasma; bulk viscosity; shear viscosity; ELLIPTIC FLOW; PLASMA;

D O I：

10.1142/S0217751X15500773

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：

Based on the first principle calculation, a Lagrangian for the system describing quarks, gluons, and their interactions, is constructed. Ascribed to the existence of dissipative behavior as a consequence of strong interaction within quark-gluon plasma (QGP) matter, auxiliary terms describing viscosities are constituted into the Lagrangian. Through a "kind" of phase transition, gluon field is redefined as a scalar field with four-vector velocity inherently attached. Then, the Lagrangian is elaborated further to produce the energy-momentum tensor of dissipative fluid-like system and the equation of motion (EOM). By imposing the law of energy and momentum conservation, the values of shear and bulk viscosities are analytically calculated. Our result shows that, at the energy level close to hadronization, the bulk viscosity is bigger than shear viscosity. By making use of the conjectured values eta/s similar to 1/4 pi and zeta/s similar to 1, the ratio of bulk to shear viscosity is found to be zeta/eta > 4 pi.

引用

页数：12

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