Correlation functions in the factorization approach of nonextensive quantum statistics
We study the long-range behavior of a gas whose partition function depends on a parameter q and it has been claimed to be a good approximation to the partition function proposed in the formulation of nonextensive statistical mechanics. We compare our results, at large temperatures and at the critical point, with the case of Boltzmann-Gibbs thermodynamics for the case of a Bose-Einstein gas. In particular, we find that for all temperatures the long-range correlations in a Bose gas decrease when the value of q departs from the standard value q=1.
Ubriaco
MR
Laboratory of Theoretical Physics, Department of Physics, University of Puerto Rico, P. O. Box 23343, Rio Piedras, Puerto Rico 00931-3343, USA.