Viscosity to entropy ratio of QGP in relativistic heavy ion collisions: The second-order viscose hydrodynamics

被引：0
作者：
Pari, Sharareh Mehrabi [1 ]
Shahri, Fatemeh Taghavi [1 ]
Javidan, Kurosh [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Dept Phys, Mashhad 917751436, Iran
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2016年 / 25卷 / 10期
关键词：
Quark gluon plasma; viscosity to entropy ratio; inverse laplace transform method; elliptic flow; RADIATIVE ENERGY-LOSS; QUARK-GLUON PLASMA; THERMODYNAMICS; PERSPECTIVE; SYSTEM; FLOW;
D O I：
10.1142/S0218301316500774
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 nuclear suppression factor R-AA and elliptic flow nu(2) are calculated by considering the effects of shear viscosity to the entropy density ratio eta/s, using the viscose hydrodynamics at the first-and second-orders of approximation and considering temperature dependent coupling alpha(s)(T). It is shown that the second-order viscose hydrodynamics (varying shear viscosity to entropy ratio) with averaged value of 4 pi eta/s = 1.5 +/- 0.1 gives the best results of R-AA and nu(2) in comparison to the experimental data.
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