English

Ensemble equivalence for non-Bolztmannian distributions

Statistical Mechanics 2007-05-23 v3

Abstract

We discuss the possibility of using generalized canonical distributions, i.e. using other factors than exp(βE)\exp(-\beta E), in order to compute the equilibrium properties of physical systems. It will be show that some other choices can, in certain cases, lead to a simpler calculation of those properties. The corresponding equivalence between the canonical and the generalized canonical distributions is derived using well-known principles of Statistical Mechanics and we exemplify the method by deriving in a simple way the equilibrium properties of the long--range Ising model.

Keywords

Cite

@article{arxiv.cond-mat/0403292,
  title  = {Ensemble equivalence for non-Bolztmannian distributions},
  author = {Raul Toral},
  journal= {arXiv preprint arXiv:cond-mat/0403292},
  year   = {2007}
}