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arXiv · 1707.03526

Generalized Ensemble Theory with Non-extensive Statistics

Ke-Ming Shen·Ben-Wei Zhang·En-Ke Wang
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Abstract

The non-extensive canonical ensemble theory is reconsidered with the method of Lagrange multipliers by maximizing Tsallis entropy, with the constraint that the normalized term of Tsallis' $q-$average of physical quantities, the sum $\sum p_j^q$, is independent of the probability $p_i$ for Tsallis parameter $q$. The self-referential problem in the deduced probability and thermal quantities in non-extensive statistics is thus avoided, and thermodynamical relationships are obtained in a consistent and natural way. We also extend the study to the non-extensive grand canonical ensemble theory and obtain the $q$-deformed Bose-Einstein distribution as well as the $q$-deformed Fermi-Dirac distribution. The theory is further applied to the generalized Planck law to demonstrate the distinct behaviors of the various generalized $q$-distribution functions discussed in literature.

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BibTeXRIS

Ke-Ming Shen, Ben-Wei Zhang, En-Ke Wang. 2017-07-12. Generalized Ensemble Theory with Non-extensive Statistics. https://doi.org/10.1016/j.physa.2017.06.030

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