| Issue |
EPJ Web of Conferences
Volume 117, 2016
12th International Conference on Nucleus-Nucleus Collisions 2015
|
|
|---|---|---|
| Article Number | 03013 | |
| Number of page(s) | 6 | |
| Section | III. Relativistic Heavy-Ion Collisions | |
| DOI | https://doi.org/10.1051/epjconf/201611703013 | |
| Published online | 11 May 2016 | |
https://doi.org/10.1051/epjconf/201611703013
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
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