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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Finazzo, Stefano I. [1] ; Rougemont, Romulo [1] ; Marrochio, Hugo [1] ; Noronha, Jorge [1, 2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP - Brazil
[2] Columbia Univ, Dept Phys, New York, NY 10027 - USA
Total Affiliations: 2
Document type: Journal article
Source: Journal of High Energy Physics; n. 2 FEB 9 2015.
Web of Science Citations: 36
Abstract

In this paper 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 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 an estimate for the temperature dependence of 11 other transport coefficients taking into account the simplest contribution 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. Using several different approximations, we give parametrizations for the temperature dependence of all the second-order transport coefficients that appear in this theory in a format that can be easily implemented in existing numerical hydrodynamic codes. (AU)

FAPESP's process: 13/04036-0 - Computation of the properties of the quark-gluon plasma at nonzero temperature and baryonic density using the holographic correspondence
Grantee:Rômulo Cesar Rougemont Pereira
Support type: Scholarships in Brazil - Post-Doctorate