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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 11: Poster Session

SOE 11.8: Poster

Tuesday, March 15, 2011, 18:05–18:45, P2

A percolation model for trust in financial markets — •Tobias Tubbenhauer and Stefan Bornholdt — Institut für Theoretische Physik, Universität Bremen, Otto-Hahn Allee, 28359 Bremen

Trust is an important feature of real markets. Motivated by the financial crisis in 2007, we want to study the building and evaporation of trust in an agent-based toy market, where agents are connected by their commercial relationships. The evolution of trust takes place in the clash between a necessity to take risk by having as much business partners as possible and a desire for security from losses received by bankrupt business partners. Between these two conflicting interests our toy market shows self organized critical behavior.

[1] E. Samanidou, E. Zschischang, D. Stauffer and T. Lux, Agent-based Models of Financial Markets, Rep. Prog. Phys. 70, 409 - 450 (2007)

[2] B. Drossel, F. Schwabl, Phys. Rev. Lett. A 69, 1629 (1992)