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

Abstract : We calculate the shear η(T) and bulk viscosities ζ(T) as well as the electric conductivity σe(T) and heat conductivity κ(T) within the Nambu-Jona-Lasinio model for three flavors as a function of temperature as well as the entropy density s(T), pressure P(T), and speed of sound cs2(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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Contributor : Dominique Girod <>
Submitted on : Thursday, November 28, 2013 - 2:48:45 PM
Last modification on : Tuesday, November 27, 2018 - 3:08:50 PM



R. Marty, E. Bratkovskaya, W. Cassing, Jörg Aichelin, H. 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⟩. ⟨in2p3-00910930⟩