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Study of the mean field renormalization group method with the Tsallis statistics

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  • Ricardo de Sousa, J.

Abstract

The phase transition of the Ising model in d-dimensional lattice is reanalyzed by using the mean field renormalization group method within the Tsallis generalization of the Boltzmann-Gibbs statistics (BGS). The critical temperature (Tc) is obtained explicitly for a general dimension d and a factor q present in the generalized statistics for clusters of one (N′ = 1) and two (N = 2) spind. In the q → 1 limit, the present work reduces to the results of Indekeu et al. (J. Phys. A 15 (1982) L291) with the usual BGS. For a linear chain (d = 1), the system presents a phase transition for q ≠ 1. When we have q⪢1, Tc(d,q) is proportional to the factor q, in accordance with the result of mean field approximation.

Suggested Citation

  • Ricardo de Sousa, J., 1997. "Study of the mean field renormalization group method with the Tsallis statistics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 235(3), pages 534-538.
    • Handle: RePEc:eee:phsmap:v:235:y:1997:i:3:p:534-538
    DOI: 10.1016/S0378-4371(96)00269-5
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