EPJ Web of Conferences
Volume 117, 201612th International Conference on Nucleus-Nucleus Collisions 2015
|Number of page(s)||6|
|Section||III. Relativistic Heavy-Ion Collisions|
|Published online||11 May 2016|
Shear viscosity to electric conductivity ratio of the QGP
1 Department of Physics and Astronomy, University of Catania, Via S. Sofia 64, I-95125 Catania, Italy
2 Laboratorio Nazionale del Sud, INFN-LNS, Via S. Sofia 63, I-95125 Catania, Italy
Published online: 11 May 2016
The transport coefficients of strongly interacting matter are currently subject of intense theoretical and phenomenological studies due to their relevance for the characterization of the quark-gluon plasma produced in ultra-relativistic heavy-ion collisions (uRHIC). We predict that (η/s)/(σel/T), independently on the running coupling αs(T), should increase up to about ~ 20 for T → Tc, while it goes down to a nearly flat behavior around ≃ 4 for T ≥ 4 Tc. Therefore we find a stronger T-dependence of σel/T with respect to η/s that in a quasiparticle approach is constrained by lQCD thermodynamics. A conformal theory, instead, predicts a similar T dependence of η/s and σel/T.
© Owned by the authors, published by EDP Sciences - SIF, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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