Negative specific heat in a Lennard-Jones-like gas with long-range interactions

被引：23
作者：
Borges, EP
Tsallis, C
机构：
[1] Univ Fed Bahia, Escola Politecn, BR-40210630 Salvador, BA, Brazil
[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2002年 / 305卷 / 1-2期
关键词：
Hamiltonian dynamics; long-range interactions; nonextensive statistical mechanics;
D O I：
10.1016/S0378-4371(01)00654-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study, through molecular dynamics, a conservative two-dimensional Lennard-Jones-like gas (with attractive potential proportional to r(-x)). We consider the effect of the range index proportional to of interactions, number of particles, total energy and particle density. We detect negative specific heat when the interactions become long-ranged (0 less than or equal to alpha/d < 1). (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：148 / 151
页数：4
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