Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/39444
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Type: Journal article
Title: Symbiosis in the Bak-Sneppen model for biological evolution with economic applications
Author: Bartolozzi, M.
Leinweber, D.
Thomas, A.
Citation: Physica A, 2006; 365(2):499-508
Publisher: Elsevier Science BV
Issue Date: 2006
ISSN: 0378-4371
1873-2119
Organisation: Special Research Centre for the Subatomic Structure of Matter
Statement of
Responsibility: 
M. Bartolozzi, D. B. Leinweber, and A. W. Thomas
Abstract: In the present work we extend the Bak-Sneppen model for biological evolution by introducing local interactions between species. This 'environmental' perturbation modifies the intrinsic fitness of each element of the ecology, leading to higher survival probability, even for the less fit.While the system still self-organizes toward a critical state, the distribution of fitness broadens, losing the classical step-function shape. A possible application in economics is discussed, where firms are represented like evolving species linked by mutual interests.
Keywords: Complex systems; Evolution/extinction; Self-organized criticality; Econophysics
RMID: 0020060618
DOI: 10.1016/j.physa.2005.09.061
Appears in Collections:Physics publications

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