Abstract
The nuclear Boltzmann equation is solved for the collision of two-dimensional nuclei with two different approximation schemes: a usual stochastic approach and a semi-deterministic approach called the weighted-particle method (WPM). The results are compared with the “exact” numerical solution. It is found that numerical fluctuations seen in the results of the stochastic approach are drastically reduced in WPM. The relaxation processes in momentum space obtained with the two methods agree reasonably well with the exact one.
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