First Order Phase Transition in a Model for Generalized Statistics

Details First Order Phase Transition in a Model for Generalized Statistics First Order Phase Transition in a Model for Generalized Statistics

2007-03-27

arxiv.org/abs/cond-mat/0703729v1

Rom. Rep. Phys. 59, 235 (2007)

Physics

Condensed Matter

Statistical Mechanics

14 pages, 4 figures

Scientific paper

A first order phase transition is found in a model which was introduced originally by Murthy and Shankar [Phys. Rev. B 60, 6517 (1999)] to describe systems of generalised exclusion statistics. I characterise the phase transition in the canonical and grandcanonical ensebles for the case when the statistical exclusion parameter is 1, which corresponds to the Fermi exclusion statistics. We observe that in the grandcanonical ensemble the phase transition has no latent heat, but it has a finite jump in the particle number. In canonical conditions--when the particle number is held fix--the internal energy is discontinuous at the transition.

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