dorsal/arxiv
View SchemaNuclear multifragmentation within the framework of different statistical ensembles
| Authors | C. E. Aguiar, R. Donangelo, S. R. Souza |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0512061 |
| URL | https://arxiv.org/abs/nucl-th/0512061 |
| DOI | 10.1103/PhysRevC.73.024613 |
| Journal | Phys.Rev. C73 (2006) 024613 |
Abstract
The sensitivity of the Statistical Multifragmentation Model to the underlying statistical assumptions is investigated. We concentrate on its micro-canonical, canonical, and isobaric formulations. As far as average values are concerned, our results reveal that all the ensembles make very similar predictions, as long as the relevant macroscopic variables (such as temperature, excitation energy and breakup volume) are the same in all statistical ensembles. It also turns out that the multiplicity dependence of the breakup volume in the micro-canonical version of the model mimics a system at (approximately) constant pressure, at least in the plateau region of the caloric curve. However, in contrast to average values, our results suggest that the distributions of physical observables are quite sensitive to the statistical assumptions. This finding may help deciding which hypothesis corresponds to the best picture for the freeze-out stage
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"abstract": "The sensitivity of the Statistical Multifragmentation Model to the underlying\nstatistical assumptions is investigated. We concentrate on its micro-canonical,\ncanonical, and isobaric formulations. As far as average values are concerned,\nour results reveal that all the ensembles make very similar predictions, as\nlong as the relevant macroscopic variables (such as temperature, excitation\nenergy and breakup volume) are the same in all statistical ensembles. It also\nturns out that the multiplicity dependence of the breakup volume in the\nmicro-canonical version of the model mimics a system at (approximately)\nconstant pressure, at least in the plateau region of the caloric curve.\nHowever, in contrast to average values, our results suggest that the\ndistributions of physical observables are quite sensitive to the statistical\nassumptions. This finding may help deciding which hypothesis corresponds to the\nbest picture for the freeze-out stage",
"arxiv_id": "nucl-th/0512061",
"authors": [
"C. E. Aguiar",
"R. Donangelo",
"S. R. Souza"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.73.024613",
"journal_ref": "Phys.Rev. C73 (2006) 024613",
"title": "Nuclear multifragmentation within the framework of different statistical ensembles",
"url": "https://arxiv.org/abs/nucl-th/0512061"
},
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