Nonextensive thermodynamics of the two-site Hubbard model
نویسنده
چکیده
Thermodynamical and magnetic properties of the half-filled, two-site Hubbard model have been discussed within the framework of the Tsallis nonextensive statistics. The temperature dependence of the entropy, specific heat and magnetic susceptibility, and the magnetic-field dependence of the magnetization have been calculated for various values of the entropic index q: the result for q = 1 in the nonextensive statistics reduces to that of the Boltzman-Gibbs statistics. Our calculations have demonstrated that calculated properties are significantly changed even for a small deviation of q from unity. e-mail: [email protected]
منابع مشابه
Nonextensive thermodynamics of the two - site Hubbard model 1
Thermodynamical and magnetic properties of the half-filled, two-site Hubbard model have been discussed within the framework of the Tsallis nonextensive statistics, in which the entropic index q plays an important role, the conventional Boltzman-Gibbs statistics being recovered in the limit of q = 1. The temperature dependence of the entropy, specific heat and magnetic susceptibility, and the ma...
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