Berlin 2012 – scientific programme
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 20: Social Systems, Opinion and Group Dynamics III
SOE 20.2: Talk
Thursday, March 29, 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.