Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2002-05-24
Physica A 334 (1-2), pp. 255-266 (2004)
Physics
Condensed Matter
Statistical Mechanics
LaTeX using elsart, 15 pages, 5 figures (8 eps files)
Scientific paper
10.1016/j.physa.2003.11.003
We analyze the cumulative distribution of total personal income of USA counties, and gross domestic product of Brazilian, German and United Kingdom counties, and also of world countries. We verify that generalized exponential distributions, related to nonextensive statistical mechanics, describe almost the whole spectrum of the distributions (within acceptable errors), ranging from the low region to the middle region, and, in some cases, up to the power-law tail. The analysis over about 30 years (for USA and Brazil) shows a regular pattern of the parameters appearing in the present phenomenological approach, suggesting a possible connection between the underlying dynamics of (at least some aspects of) the economy of a country (or of the whole world) and nonextensive statistical mechanics. We also introduce two additional examples related to geographical distributions: land areas of counties and land prices, and the same kind of equations adjust the data in the whole range of the spectrum.
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