Diffusive clustering in an infinite system of hierarchically interacting diffusions |
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Authors: | Klaus Fleischmann Andreas Greven |
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Institution: | (1) Institut für Angewandte Analysis und Stochastik, Mohrenstrasse 39, D-10117 Berlin, Germany;(2) Humboldt-Universität zu Berlin, Unter den Linden 6, D-10099 Berlin, Germany |
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Abstract: | Summary We study a countable system of interacting diffusions on the interval 0,1], indexed by a hierarchical group. A particular choice of the interaction guaranties, we are in the diffusive clustering regime. This means clusters of components with values either close to 0 or close to 1 grow on various different scales. However, single components oscillate infinitely often between values close to 0 and close to 1 in such a way that they spend fraction one of their time together and close to the boundary. The processes in the whole class considered and starting with a shift-ergodic initial law have the same qualitative properties (universality). |
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