Comparison of Viscosities from the Chapman-Enskog and Relaxation Time Methods
Nuclear Theory
2015-06-03 v2 High Energy Physics - Phenomenology
Abstract
A quantitative comparison between the results of shear viscosities from the Chapman-Enskog and relaxation time methods is performed for selected test cases with specified elastic differential cross sections: (i) the non-relativistic, relativistic and ultra-relativistic hard sphere gas with angle and energy independent differential cross section, (ii) the Maxwell gas, (iii) chiral pions and (iv) massive pions. Our quantitative results reveal that the extent of agreement (or disagreement) depends very sensitively on the energy dependence of the differential cross sections employed.
Keywords
Cite
@article{arxiv.1201.3104,
title = {Comparison of Viscosities from the Chapman-Enskog and Relaxation Time Methods},
author = {A. Wiranata and M. Prakash and P. Chakraborty},
journal= {arXiv preprint arXiv:1201.3104},
year = {2015}
}
Comments
Submitted to Cent. Eur. J.Phys