TY  - JOUR
A1  - Denicol, Gabriel S.
A1  - Huang, Xu-Guang
A1  - Koide, Tomoi
A1  - Rischke, Dirk H.
T1  - Consistency of field-theoretical and kinetic calculations of viscous transport coefficients for a relativistic fluid
T2  - Physics Letters B
N2  - We investigate the ratios βη≡η/τπ and βζ≡ζ/τΠ, i.e., the ratios of shear, η, and bulk, ζ, viscosities to the relaxation times τπ, τΠ of the shear stress tensor and bulk viscous pressure, respectively, in the framework of causal relativistic dissipative fluid dynamics. These viscous transport coefficients are computed both in a field-theoretical and a kinetic approach based on the Boltzmann equation. Our results differ from those of the traditional Boltzmann calculation by Israel and Stewart. The new expressions for the viscous transport coefficients agree with the results obtained in the field-theoretical approach when the contributions from pair annihilation and creation (PAC) are neglected. The latter induce non-negligible corrections to the viscous transport coefficients.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/76642
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-766425
SN  - 0370-2693
VL  - 708
IS  - 1
SP  - 174
EP  - 178
PB  - Elsevier
CY  - Amsterdam
ER  -