title: Investigating the phase diagram of finite extensive and nonextensive systems.
abstract: Microcanonical caloric curves at constant pressure and pressure versus volume curves at constant temperature are calculated using the probability distributions of a canonical ensemble at constant pressure. It is evidenced that the constant pressure path provides a natural order parameter even for small systems. While for large systems the Coulomb interaction is destroying the liquid-gas phase transition, for smaller systems the phase transition survives. Phase diagrams of a nuclear system without Coulomb and hard-core interactions are constructed and the critical point is identified.
authors.affiliation: Laboratoire de Physique Corpusculaire Caen IN2P3-CNRS/ISMRA, F-14050 Caen Cedex, France.
authors.forename: A H
authors.initials: AH
authors.lastname: Raduta
authors.forename: A R
authors.initials: AR
authors.lastname: Raduta