Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$
High Energy Physics - Phenomenology
2013-11-14 v2 Nuclear Theory
Abstract
We calculate the shear and bulk viscosities as well as the electric conductivity and heat conductivity within the Nambu-Jona-Lasinio model for 3 flavors as a function of temperature as well as the entropy density , pressure and speed of sound . 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.
Keywords
Cite
@article{arxiv.1305.7180,
title = {Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$},
author = {Rudy Marty and Elena Bratkovskaya and Wolfgang Cassing and Jörg Aichelin and Hamza Berrehrah},
journal= {arXiv preprint arXiv:1305.7180},
year = {2013}
}
Comments
13 pages, 16 figures