2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21042The transport equations for a two-dimensional electron gas with spin-orbit interaction are presented. The distribution function is a 2x2-matrix in the spin space. Particle and energy conservation laws determine the expressions for the electric current and the energy flow. The derived transport equations are applied to the spin-splitting of a wave packed and to the calculation of the structure factor and the dynamic conductivity.6 pages, 1 figure, revised versionMesoscale and Nanoscale Physicstext