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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 20: Social Systems, Opinion and Group Dynamics III

SOE 20.2: Vortrag

Donnerstag, 29. März 2012, 14:15–14:30, H 0110

Early fragmentation in the adaptive voter model on directed networks — •Gerd Zschaler¹, Gesa A. Böhme¹, Michael Seißinger¹, Cristián Huepe², and Thilo Gross³ — ¹Max-Planck-Institut für Physik komplexer Systeme, Dresden, Germany — ²614 N. Paulina Street, Chicago IL 60622-6062, USA — ³University of Bristol, Bristol, UK

We consider voter dynamics on a directed adaptive network with fixed out-degree distribution. A transition between an active phase and a fragmented phase is observed. This transition is similar to the undirected case if the networks are sufficiently dense and have a narrow out-degree distribution. However, if a significant number of nodes with low out-degree are present, then fragmentation can occur even far below the estimated critical point due to the formation of self-stabilizing structures that nucleate fragmentation. This process may be relevant for fragmentation in current political opinion formation processes.