2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/150538It is proved that the quantization of the Volkovyski-Sinai model of ideal gas (in the Maxwell-Boltzmann statistics) enjoys at the thermodynamical limit the properties of mixing and ergodicity with respect to the quantum canonical Gibbs state. Plus, the average over the quantum state of a pseudo-differential operator is exactly the average over the classical canonical measure of its Weyl symbol.35 pages, LaTeXChaotic DynamicsExactly Solvable and Integrable SystemsQuantum Physicstext