Title: Ultrafast dynamics of laser-pulse excited semiconductors: non-Markovian quantum kinetic equations with nonequilibrium correlations
Authors: V.V.Ignatyuk (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii Str., 79011 Lviv, Ukraine),
V.G.Morozov (Moscow State Institute of Radioengineering, Electronics and Automation, 117454 Vernadsky Prospect 78, Moscow, Russia)

Non-Markovian kinetic equations in the second Born approximation are derived for a two-zone semiconductor excited by a short laser pulse. Both collision dynamics and running nonequilibrium correlations are taken into consideration. The energy balance and relaxation of the system to equilibrium are discussed. Results of numerical solution of the kinetic equations for carriers and phonons are presented.

Key words: quantum kinetic theory, non-Markovian kinetic equations, non-equilibrium correlations, electron-phonon interaction
PACS: 31.70.H, 42.50.-p, 05.70.Ln, 78.20.-e, 82.20.Mj, 82.20.Rp