Phenomenological and microscopic cluster models. II. Phase transitions

P. R. Fraser, H. Yépez-Martínez, P. O. Hess, G. Lévai

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Based on the results of a previous paper (Paper I), by performing the geometrical mapping via coherent states, phase transitions are investigated and compared within two algebraic cluster models. The difference between the semimicroscopic algebraic cluster model (SACM) and the phenomenological algebraic cluster model (PACM) is that the former strictly observes the Pauli exclusion principle between the nucleons of the individual clusters, while the latter ignores it. From the technical point of view the SACM is more involved mathematically, while the formalism of the PACM is closer to that of other algebraic models with different physical content. First- and second-order phase transitions are identified in both models, while in the SACM a critical line also appears. Analytical results are complemented with numerical studies on α-cluster states of the 20Ne and 24Mg nuclei.

Original languageEnglish
Article number014317
JournalPhysical Review C - Nuclear Physics
Volume85
Issue number1
DOIs
Publication statusPublished - Jan 18 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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