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Journal Articles Physical Review C Year : 2013

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

R. Marty
  • Function : Author
E. Bratkovskaya
  • Function : Author
W. Cassing
  • Function : Author
Joerg Aichelin
H. Berrehrah
  • Function : Author

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.

Dates and versions

in2p3-00910930 , version 1 (28-11-2013)

Identifiers

Cite

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