Microscopic Description of Nonextensive Systems in the Framework of the Ising Model
DOI:
https://doi.org/10.15407/ujpe58.05.0497Keywords:
Ising model, Hamiltonian, order parameterAbstract
To describe the behavior of nonextensive systems, the deformed Ising Hamiltonian is introduced by substituting the spin variable si by the deformed one sqi. In the framework of mean-field theory, the phase transition paramagnet–ferromagnet is investigated for the deformed partition function. The influence of the non-extensive parameter q on the free-energy density and the steady-state value of order parameter is studied in the Landau approximation.
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