Out of Equilibrium Quantum Systems
In practically all disordered solds - in glasses but also in crystals with certain point defects structural rearrangements take place via quantum tunneling of atoms or groups of atoms. These degrees of freedom drastically change the macroscopic behaviour of these materials at low temperautures. Within several projects we are investigating the properties of atomic tunneling centers in various model systems. The spectrum of research activities spans from the investigation of the microscopic nature and the dynamics of individual tunneling systems to the complex collective behaviour of coupled systems.