Simple kinetic-theory tests of dissipative and anisotropic hydrodynamics
1 Institute of Physics, Jan Kochanowski University, PL-25406 Kielce, Poland
2 The H. Niewodniczánski Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland
a e-mail: Wojciech.Florkowski@ifj.edu.pl
Published online: 29 April 2014
We solve the one-dimensional boost-invariant Boltzmann equation in the relaxation time approximation and compare the results with the predictions of dissipative and anisotropic hydrodynamics. We observe that recent formulations of second-order viscous hydrodynamics agree better with the exact solutions than the standard Israel-Stewart approach. In addition, we find that the anisotropic hydrodynamics gives a very good approximation to the exact results provided the appropriate connection between the kinetic and anisotropic hydrodynamics relaxation times is introduced.
© Owned by the authors, published by EDP Sciences, 2014
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