Jürg Fröhlich

Institute for Theoretical Physics, ETH Zurich

"ETH in Quantum Mechanics"

This talk will concern a general approach to the problems of information acquisition and of the time evolution of states in Quantum Mechanics; (Events, Trees, Histories). I plan to outline a novel theory of observations and experiments. I will discuss direct (projective or von Neumann) and indirect (Kraus) observations/measurements and illustrate general ideas and results on concrete examples. Methods of probability theory used in this theory will be mentioned.