IFIMAR 20926
INSTITUTO DE INVESTIGACIONES FISICAS DE MAR DEL PLATA
Unidad Ejecutora - UE
artículos
Título:
Networks effects on a conservative exchanges market model
Autor/es:
L. BRAUNSTEIN; P. A. MACRI; J. R. IGLESIAS
Revista:
PHYSICA A - STATISTICAL AND THEORETICAL PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 392 p. 1788 - 1794
ISSN:
0378-4371
Resumen:
Many models of market dynamics make use of the idea of conservative wealth exchangesamong economic agents. A few years ago an exchange model using extremal dynamics wasdeveloped and a very interesting result was obtained: a self-generated minimum wealth orpoverty line. On the other hand, the wealth distribution exhibited an exponential shape asa function of the square of the wealth. These results have been obtained both consideringexchanges between nearest neighbors or in a mean field scheme. In the present paperwe study the effect of distributing the agents on a complex network. We have consideredarchetypical complex networks: ErdösRényi random networks and scale-free networks.The presence of a poverty line with finite wealth is preserved but spatial correlationsare important, particularly between the degree of the node and the wealth. We presenta detailed study of the correlations, as well as the changes in the Gini coefficient, thatmeasures the inequality, as a function of the type and average degree of the considerednetworks.
