XIII International Workshop on Hadron Physics - XIII Hadron Physics

22-27 March 2015
Hotel do Bosque
Brazil/East timezone

Hydrodynamic transport coefficients for the non-conformal quark-gluon plasma from holography

26 Mar 2015, 11:30
30m
Hotel do Bosque

Hotel do Bosque

Rodovia Mário Covas (Rio-Santos) BR - 101 Sul, Km 533, Angra dos Reis, RJ, Brazil
Oral presentation Field theoretical approaches to QCD

Speaker

Dr Rômulo Rougemont (USP)

Description

We obtain holographic formulas for the transport coefficients $\kappa$ and $\tau_\pi$ present in the second-order derivative expansion of relativistic hydrodynamics in curved spacetime associated with a non-conformal strongly coupled plasma described holographically by an Einstein+Scalar action in the bulk. We compute these coefficients as functions of the temperature in a bottom-up non-conformal model that is tuned to reproduce (2+1)-flavor lattice QCD thermodynamics at zero baryon chemical potential. We directly compute, besides the speed of sound, 6 other transport coefficients that appear at second-order in the derivative expansion. We also give estimates for the temperature dependence of 11 other transport coefficients taking into account the simplest contributions from non-conformal effects that appear near the QCD crossover phase transition. Using these results, we construct an Israel-Stewart-like theory in flat spacetime containing 13 of these 17 transport coefficients that should be suitable for phenomenological applications in the context of numerical hydrodynamic simulations of the strongly-coupled, non-conformal quark-gluon plasma.

 Slides