DECAY KINETICS OF BALLISTIC ANNIHILATION

被引：60

作者：

BENNAIM, E

REDNER, S

LEYVRAZ, F

机构：

[1] BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215

[2] NATL AUTONOMOUS UNIV MEXICO,INST FIS,CUERNAVACA LAB,MEXICO CITY 04510,DF,MEXICO

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.70.1890

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the kinetics of ballistic annihilation, A + A --> 0, with continuous initial particle velocity distributions. The concentration and the rms velocity are found to decay as c is similar to t(-alpha) and v(rms) is similar to t(-beta), respectively, with the relation alpha + beta = 1 holding in any spatial dimension. A ''mean-field'' Boltzmann equation for the evolution of the velocity distribution predicts that alpha and beta depend strongly on the initial condition, a behavior which is confirmed numerically in one and two dimensions.

引用

页码：1890 / 1893

页数：4

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