On the extensivity of the entropy Sq, the q-generalized central limit theorem and the q-triplet

Abstract

First, we briefly review the conditions under which the entropy $S_q$ can be extensive (Tsallis, Gell-Mann and Sato, Proc. Natl. Acad. Sc. USA (2005), in press; cond-mat/0502274), as well as the possible $q$-generalization of the central limit theorem (Moyano, Tsallis and Gell-Mann, cond-mat/0509229). Then, we address the $q$-triplet recently determined in the solar wind (Burlaga and Vinas, Physica A {\bf 356}, 375 (2005)) and its possible relation with the space-dimension $d$ and with the range of the interactions (characterized by $\alpha$, the attractive potential energy being assumed to decay as $r^{-\alpha }$ at long distances $r$).

9 pages including 3 figures. Invited lecture at the International Conference on Complexity and Nonextensivity - New Trends in Statistical Mechanics (Yukawa Institute for Theoretical Physics, Kyoto, 14-18 March 2005). To appear in Prog. Theor. Phys. Supplement, eds. M. Sakagami, N. Suzuki and S. Abe

References in corpus (3)

• Asymptotically scale-invariant occupancy of phase space makes the entropy Sq extensive
• Numerical indications of a q-generalised central limit theorem
• Non-extensive random walks

Cited by in corpus (5)

• Generalization of the possible algebraic basis of $q$-triplets
• Occupancy of phase space, extensivity of Sq, and q-generalized central limit theorem
• Equivalence among different formalisms in the Tsallis entropy framework
• Independent Approximates enable closed-form estimation of heavy-tailed distributions
• Two types of $q$-Gaussian distributions used to study the diffusion in a finite region