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Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$

Abstract : We calculate the shear $\eta(T)$ and bulk viscosities $\zeta(T)$ as well as the electric conductivity $\sigma_e(T)$ and heat conductivity $\kappa(T)$ within the Nambu-Jona-Lasinio model for 3 flavors as a function of temperature as well as the entropy density $s(T)$, pressure $P(T)$ and speed of sound $c_s^2(T)$. We compare the results with other models such as the Polyakov-Nambu-Jona-Lasinio (PNJL) model and the dynamical quasiparticle model (DQPM) and confront these results with lattice QCD data whenever available. We find the NJL model to have a limited predictive power for the thermodynamic variables and various transport coefficients above the critical temperature whereas the PNJL model and DQPM show acceptable results for the quantities of interest.
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http://hal.in2p3.fr/in2p3-00919710
Contributor : Sylvie Flores <>
Submitted on : Tuesday, December 17, 2013 - 11:21:46 AM
Last modification on : Tuesday, November 27, 2018 - 3:08:50 PM

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Rudy Marty, Elena Bratkovskaya, Wolfgang Cassing, Jörg Aichelin, Hamza Berrehrah. Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$. Physical Review C, American Physical Society, 2013, 88, pp.045204. ⟨10.1103/PhysRevC.88.045204⟩. ⟨in2p3-00919710⟩

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