Exact solutions of the (0+1)-dimensional kinetic equation in the relaxation time approximation

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Maksymiuk, Ewa^1

Institute Od Physics, Jan Kochanowski University, Kielce

PL-25460, Poland^1

关键词: Bulk viscosity;    Classical statistics;    Exact solution;    Fermi-Dirac statistics;    Kinetic equations;    Relaxation time approximation;    Second orders;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012054/pdf
DOI  :  10.1088/1742-6596/612/1/012054

来源: IOP

【 摘 要 】

We present exact solutions of the (0+1)-dimensional kinetic equation for a massive gas in the relaxation time approximation. At first, we analyse the case of classical statistics and argue that the traditional second-order hydrodynamics misses the shear-bulk coupling. In the next step, we include Bose-Einstein and Fermi-Dirac statistics in the calculations and show that they are important for the description of the effects connected with bulk viscosity.