中国物理B ›› 2007, Vol. 16 ›› Issue (11): 3216-3219.doi: 10.1088/1009-1963/16/11/012

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Density fluctuation of the 3He reaction--diffusion model in nonextensive statistical mechanics

吴俊林1, 黄新民2   

  1. (1)Department of Physics, Shaanxi Normal University, Xi'an 710062, China; (2)Department of Physics, Shaanxi University of Technology, Hanzhong 723000, China
  • 出版日期:2007-11-20 发布日期:2007-11-20

Density fluctuation of the 3He reaction--diffusion model in nonextensive statistical mechanics

Wu Jun-Lin(吴俊林)a)† and Huang Xin-Min(黄新民)b)   

  1. a Department of Physics, Shaanxi Normal University, Xi'an 710062, China; b Department of Physics, Shaanxi University of Technology, Hanzhong 723000, China
  • Online:2007-11-20 Published:2007-11-20

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Abstract: In this paper the time-space correlation of density fluctuation of the 3He reaction–diffusion model is investigated where the equilibrium distribution is described by the generalized Maxwell–Boltzmann distribution in the framework of Tsallis statistics. By using the density operator technique, the nonextensive pressure effect is introduced into the master equation and thus the generalized master equation is derived for the nonextensive system. This paper uses the 3He reaction–diffusion model to analyse the effect of nonextensive pressure on the fluctuation and finds that the nonextensive parameter q plays a very important role in determining the characteristics of the fluctuation waves.  

Key words: nonextensive statistics, 3He reaction–diffusion model, density fluctuation

中图分类号:  (Fluctuation phenomena, random processes, noise, and Brownian motion)

  • 05.40.-a
05.20.-y (Classical statistical mechanics) 05.60.Cd (Classical transport)