Dr. Khazhgali Kozhasov (Universität Osnabrück)
Dr. Andreas Focks (Universität Osnabrück)
Models in the Environmental Risk Assessment of Chemicals
Dr. Kristina Schubert (Universität Osnabrück)
Fluctuation Results for General Ising Models - Block Spin Ising Models and Random Interactions
Starting from the classical Curie-Weiss model in statistical mechanics, we will consider more general Ising models. On the one hand, we introduce a block structure, i.e. a model of spins in which the vertices are divided into a finite number of blocks and where pair interactions are given according to their blocks. The magnetization is then the vector of magnetizations within each block, and we are interested in its behaviour and in particular in its fluctuations.
On the other hand, we consider Ising models on Erdős-Rényi random graphs. Here, I will also present results on the fluctuations of the magnetization.