King Fahd University of Petroleum and Minerals, P.O. Box 419, Dhahran 31261, Saudi Arabia
Copyright © 2011 Assane Lo. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The goal of this paper is to provide estimates leading to a direct proof
of the analyticity of the pressure for certain classical unbounded models. We use our new formula (Lo, 2007) to establish the analyticity of the pressure in the thermodynamic limit for a wide class of classical unbounded models
in statistical mechanics.