| Issue |
Europhys. Lett.
Volume 67, Number 6, September 2004
|
|
|---|---|---|
| Page(s) | 893 - 899 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2004-10145-2 | |
| Published online | 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: jldu@tju.edu.cn
Received:
6
April
2004
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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