Probing strongly coupled anisotropic plasma

被引:111
作者
Giataganas, Dimitrios [1 ,2 ]
机构
[1] Univ Witwatersrand, Natl Inst Theoret Phys, Sch Phys, ZA-2050 Johannesburg, South Africa
[2] Univ Witwatersrand, Ctr Theoret Phys, ZA-2050 Johannesburg, South Africa
关键词
Quark-Gluon Plasma; Gauge-gravity correspondence; AdS-CFT Correspondence; Holography and quark-gluon plasmas; QUARK-GLUON PLASMA; COLLISIONS;
D O I
10.1007/JHEP07(2012)031
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We calculate the static potential, the drag force and the jet quenching parameter in strongly coupled anisotropic N = 4 super Yang-Mills plasma. We find that the jet quenching is in general enhanced in presence of anisotropy compared to the isotropic case and that its value depends strongly on the direction of the moving quark and the direction along which the momentum broadening occurs. The jet quenching is strongly enhanced for a quark moving along the anisotropic direction and momentum broadening happens along the transverse one. The parameter gets lower for a quark moving along the transverse direction and the momentum broadening considered along the anisotropic one. Finally, a weaker enhancement is observed when the quark moves in the transverse plane and the broadening occurs on the same plane. The drag force for quark motion parallel to the anisotropy is always enhanced. For motion in the transverse space the drag force is enhanced compared to the isotropic case only for quarks having velocity above a critical value. Below this critical value the force is decreased. Moreover, the drag force along the anisotropic direction is always stronger than the force in the transverse space. The diffusion time follows exactly the inverse relations of the drag forces. The static potential is decreased and stronger decrease observed for quark-antiquark pair aligned along the anisotropic direction than the transverse one. We finally comment on our results and elaborate on their similarities and differences with the weakly coupled plasmas.
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页数:39
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