Order parameter fluctuations and thermodynamic phase transitions in finite spin systems and fragmenting nuclei

被引：19

作者：

Carmona, JM

Richert, J

Wagner, P

机构：

[1] Univ Zaragoza, Dept Fis Teor, E-50009 Zaragoza, Spain

[2] Univ Strasbourg, Phys Theor Lab, Unite Rech Mixte Univ, CNRS,UMR7085, F-67084 Strasbourg, France

[3] Inst Rech Subatom, Unite Rech Mixte Univ, CNRS, UMR7500, F-67037 Strasbourg 2, France

来源：

PHYSICS LETTERS B | 2002年 / 531卷 / 1-2期

关键词：

order of phase transition; finite systems; nuclear fragmentation;

D O I：

10.1016/S0370-2693(02)01369-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that in small and low density systems described by a lattice gas model with fixed number of particles the location of a thermodynamic phase transition can be detected by means of the distribution of the fluctuations related to an order parameter which is chosen to be the size of the largest fragment, We show the correlation between the size of the system and the observed order of the transition. We discuss the implications of this correlation on the analysis of experimental fragmentation data. (C) 2002 Elsevier Science B.V. All rights reserved.

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收藏

页码：71 / 76

页数：6

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