Scaling functions for Tsallis non--extensive statistics

Abstract

We study the one-dimensional Ising model with long-range interactions in the context of Tsallis non-extensive statistics by computing numerically the number of states with a given energy. We find that the internal energy, magnetization, entropy and free energy follow non-trivial scaling laws with the number of constituents $N$ and temperature $T$. Each of the scaling functions for the internal energy, the magnetization and the free energy, adopts three different forms corresponding to $q>1$, $q=1$ and $q<1$, being $q$ the non-extensivity parameter of Tsallis statistics.