Transport theory: Suitable levels of description

Prof. J. Rammer

The University of Umeň

Tuesday, 25 February 2014, 10:30
Matfys library

Non-equilibrium statistical mechanics of many-body systems are conveniently formulated in terms of quantum field theory. The arsenal of generating functionals and diagrammatic techniques are thereby employable. However, for many purposes the full theory entails too much information, and efficient approximation schemes are needed. In the talk I will discuss the merits of different levels of description, descending from quantum field theory all the way to the (quasi-) classical description of electron dynamics in electronic devices.