UNIVERSAL BEHAVIOR OF LYAPUNOV EXPONENTS IN UNSTABLE SYSTEMS

被引：48

作者：

BONASERA, A ^{[1
]}

LATORA, V ^{[1
]}

RAPISARDA, A ^{[1
]}

机构：

[1] UNIV CATANIA,DIPARTMENTO FIS,I-95129 CATANIA,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3434

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the Lyapunov exponents in a classical molecular dynamics framework. Yukawa and Slater-Kirkwood forces are considered in order to give an equation of state that resembles the nuclear and the atomic He-4 equation of state, respectively, near the critical point for liquid-gas phase transition. The largest Lyapunov exponents lambda are always positive and can be very well fitted near the ''critical temperature'' with a functional form lambda proportional to \T - T-c\(-omega), where the exponent omega = 0.15 is independent of the system and mass number. At smaller temperatures we find that lambda proportional to T-0.4498, a universal behavior characteristic of an order to chaos transition.

引用

页码：3434 / 3437

页数：4

共 25 条

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