Non-universal scaling and dynamical feedback in generalized models of financial markets

Details Non-universal scaling and dynamical feedback in generalized models of financial markets Non-universal scaling and dynamical feedback in generalized models of financial markets

2001-08-24

arxiv.org/abs/cond-mat/0108399v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

10pages, 3figures

Scientific paper

10.1016/S0378-4371(01)00426-5

We study self-organized models for information transmission and herd behavior in financial markets. Existing models are generalized to take into account the effect of size-dependent fragmentation and coagulation probabilities of groups of agents and to include a demand process. Non-universal scaling with a tunable exponent for the group size distribution is found in the resulting system. We also show that the fragmentation and coagulation probabilities of groups of agents have a strong influence on the average investment rate of the system.

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