Description of quasi-equilibrium states of self-gravitating systems based on non-extensive thermostatistics

Masa-aki Sakagami and Atsushi Taruya

Physica A: Statistical Mechanics and its Applications, 2004, vol. 340, issue 1, 444-452

Abstract: We present an application of Tsallis’ generalized entropy to analysis for thermodynamical nature of the self-gravitating stellar systems. Extremizing the Tsallis entropy, we obtain an equation of the state known as stellar polytrope. And a role of the extremes as a quasi-equilibrium is shown from results of N-body simulations.

Keywords: Non-extensive entropy; Self-gravitating system; Stellar polytrope; Quasi-equilibrium (search for similar items in EconPapers)
Date: 2004
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:340:y:2004:i:1:p:444-452

DOI: 10.1016/j.physa.2004.04.039

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