Donangelo, R.; Hansen, A.; Sneppen, K.; Souza, S.R. - In: Physica A: Statistical Mechanics and its Applications 287 (2000) 3, pp. 539-545
We consider a market where many agents trade different types of products with each other. We model development of collective modes in this market, and quantify these by fluctuations that scale with time with a Hurst exponent of about 0.7. We demonstrate that individual products in the model...