Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$ - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2013

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

Rudy Marty
  • Function : Author
Elena Bratkovskaya
  • Function : Author
Wolfgang Cassing
  • Function : Author
Joerg Aichelin
Hamza Berrehrah
  • Function : Author

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.

Dates and versions

in2p3-00919710 , version 1 (28-11-2013)
in2p3-00919710 , version 2 (17-12-2013)

Identifiers

Cite

Rudy Marty, Elena Bratkovskaya, Wolfgang Cassing, Joerg Aichelin, Hamza Berrehrah. Transport coefficients from the Nambu-Jona-Lasinio model for $SU(3)_f$. Physical Review C, 2013, 88, pp.045204. ⟨10.1103/PhysRevC.88.045204⟩. ⟨in2p3-00919710v2⟩
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