Dynamical correlations as origin of nonextensive entropyT. 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