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DY: Fachverband Dynamik und Statistische Physik

DY 6: Statistical Physics far from Thermal Equilibrium - Part II

DY 6.8: Talk

Monday, March 31, 2014, 17:15–17:30, ZEU 160

Formation of correlations at short time scales — •Klaus Morawetz — Münster University of Applied Sciences, Stegerwaldstrasse 39, 48565 Steinfurt, Germany — International Institute of Physics (IIP), Avenida Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil — Max-Planck- Institute for the Physics of Complex Systems, 01187 Dresden, Germany

Using a conserving relaxation-time approximation an analytic formula is derived which describes the time dependence of the formation of correlations in two distinct physical systems: (i) the collective modes in a plasma created by a short intense laser pulse with an additional external electric field bias reproducing experimental universal features of the transient time behaviour of femtosecond spectroscopy (Phys. Rev. B 72 (2005) 233203) and (ii) the population dynamics of cold atomic gases on an optical lattice after a sudden quench.