dorsal/arxiv
View SchemaQuasi-gaussian fixed points and factorial cumulants in nuclear multifragmentation
| Authors | D. Lacroix, R. Peschanski |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9606019 |
| URL | https://arxiv.org/abs/nucl-th/9606019 |
| DOI | 10.1016/S0375-9474(97)00476-4 |
| Journal | Nucl.Phys.A615:207-219,1997 |
Abstract
We re-analyze the conditions for the phenomenon of intermittency (self-similar fluctuations) to occur in models of multifragmentation. Analyzing two different mechanisms, the bond-percolation and the ERW (Elattari, Richert and Wagner) statistical fragmentation models, we point out a common quasi-gaussian shape of the total multiplicity distribution in the critical range. The fixed-point property is also observed for the multiplicity of the second bin. Fluctuations are studied using scaled factorial cumulants instead of scaled factorial moments. The second-order cumulant displays the intermittency signal while higher order cumulants are equal to zero, revealing a large information redundancy in scaled factorial moments. A practical criterion is proposed to identify the gaussian feature of light-fragment production, distinguishing between a self-similarity mechanism (ERW) and the superposition of independent sources (percolation).
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"abstract": "We re-analyze the conditions for the phenomenon of intermittency\n(self-similar fluctuations) to occur in models of multifragmentation. Analyzing\ntwo different mechanisms, the bond-percolation and the ERW (Elattari, Richert\nand Wagner) statistical fragmentation models, we point out a common\nquasi-gaussian shape of the total multiplicity distribution in the critical\nrange. The fixed-point property is also observed for the multiplicity of the\nsecond bin. Fluctuations are studied using scaled factorial cumulants instead\nof scaled factorial moments. The second-order cumulant displays the\nintermittency signal while higher order cumulants are equal to zero, revealing\na large information redundancy in scaled factorial moments. A practical\ncriterion is proposed to identify the gaussian feature of light-fragment\nproduction, distinguishing between a self-similarity mechanism (ERW) and the\nsuperposition of independent sources (percolation).",
"arxiv_id": "nucl-th/9606019",
"authors": [
"D. Lacroix",
"R. Peschanski"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0375-9474(97)00476-4",
"journal_ref": "Nucl.Phys.A615:207-219,1997",
"title": "Quasi-gaussian fixed points and factorial cumulants in nuclear multifragmentation",
"url": "https://arxiv.org/abs/nucl-th/9606019"
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