Thermodynamics of clusterized matter

Details Thermodynamics of clusterized matter Thermodynamics of clusterized matter

2009-02-28

arxiv.org/abs/0903.0077v3

Phys.Rev.C80:024606,2009

Physics

Nuclear Physics

Nuclear Theory

18 pages, 9 figures

Scientific paper

10.1103/PhysRevC.80.024606

Thermodynamics of clusterized matter is studied in the framework of statistical models with non-interacting cluster degrees of freedom. At variance with the analytical Fisher model, exact Metropolis simulation results indicate that the transition from homogeneous to clusterized matter lies along the $\rho=\rho_0$ axis at all temperatures and the limiting point of the phase diagram is not a critical point even if the surface energy vanishes at this point. Sensitivity of the inferred phase diagram to the employed statistical framework in the case of finite systems is discussed by considering the grand-canonical and constant-pressure canonical ensembles. A Wigner-Seitz formalism in which the fragment charge is neutralized by an uniform electron distribution allows to build the phase diagram of neutron star matter.

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