Department seminar

Date and time: 15 February 2017 (Wednesday), 4:00 pm
Venue: Seminar Hall

Title: Formation of correlation and nonlocal quantum kinetic theory

Speaker: Prof. Klaus Morawetz, Muenster University of Applied Sciences, Stegerwaldstrasse 39, 48565 Steinfurt, Germany. Also at International Institute of Physics (IIP), Avenida Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil and Max Planck Institute for the Physics of Complex Systems, Dresden, Germany

Abstract: Femto-second laser excitation of collective modes in semiconductors as well as quenches of cold atoms in optical lattices can be described by fluctuations of the mean field. At later times, a kinetic equation of nonlocal and non-instantaneous character is presented which unifies the achievements of the transport in dense quantum gases with the Landau theory of Fermi systems. The balance equations include quasi-particle and the correlated two-particle contributions. The medium effect on binary collisions is shown to mediate a latent heat as energy conversion between correlation and thermal energy. The numerical solution is not more expensive than solving the Boltzmann equation and applications are shown for heavy ion collisions.