Fokker–Planck study of stellar self-gravitating system away from the thermal equilibrium: connection with non-extensive statistics

Atsushi Taruya and Masa-aki Sakagami

Physica A: Statistical Mechanics and its Applications, 2004, vol. 340, issue 1, 453-458

Abstract: We present a recent progress on the numerical study of the long-term evolution of stellar self-gravitating systems, focusing on the connection with non-extensive statistics. In particular, we discuss the quasi-equilibrium behaviors found in the previous N-body simulations. Using the Fokker–Planck equation, we show that the quasi-equilibrium behaviors can be described by a simplified treatment of the stellar dynamics.

Keywords: Non-extensive entropy; Self-gravitating system; Quasi-equilibrium state; Stellar polytrope (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:453-458

DOI: 10.1016/j.physa.2004.04.040

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