Volume 67, Number 6, September 2004
|893 - 899
|01 September 2004
The nonextensive parameter and Tsallis distribution for self-gravitating systems
Department of Physics, School of Science, Tianjin University Tianjin 300072, PRC
Corresponding author: email@example.com
Accepted: 9 July 2004
The properties of the nonextensive parameter q and the Tsallis distribution for self-gravitating systems are studied. A mathematical expression of q is deduced based on the generalized Boltzmann equation, the q-H theorem and the generalized Maxwellian q-velocity distribution in the framework of Tsallis statistics. We obtain a clear understanding of the physics of with regard to the temperature gradient and the gravitational potential of the self-gravitating systems. It is suggested that the Tsallis statistics could be statistics suitable for describing the nonequilibrium systems with inhomogeneous temperature and long-range interactions.
PACS: 05.20.-y – Classical statistical mechanics / 95.30.Lz – Hydrodynamics
© EDP Sciences, 2004
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