Europhys. Lett.
Volume 70, Number 4, May 2005
Page(s) 439 - 445
Section General
Published online 13 April 2005
Europhys. Lett., 70 (4), pp. 439-445 (2005)
DOI: 10.1209/epl/i2004-10506-9

Dynamical correlations as origin of nonextensive entropy

T. Kodama1, H.-T. Elze1, C. E. Aguiar1 and T. Koide2

1  Instituto de Física, Universidade Federal do Rio de Janeiro C.P. 68528, 21945-970 Rio de Janeiro, RJ, Brazil
2  Institut für Theoretische Physik, University of Frankfurt - Frankfurt, Germany

received 10 November 2004; accepted in final form 23 March 2005
published online 13 April 2005

We present a simple and general argument showing that a class of dynamical correlations give rise to the so-called Tsallis nonextensive statistics. An example of a system having such a dynamics is given, exhibiting a non-Boltzmann energy distribution. A relation with prethermalization processes is discussed.

05.70.-a - Thermodynamics.
05.90.+m - Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems.

© EDP Sciences 2005