DIFFUSION REPRODUCTION PROCESSES

被引：47

作者：

ZHANG, YC

SERVA, M

POLIKARPOV, M

机构：

[1] INFN, Dipartimento di Fisica, Università di Roma, Rome

[2] Institute of Theoretical and Experimental Physics, Moscow

来源：

JOURNAL OF STATISTICAL PHYSICS | 1990年 / 58卷 / 5-6期

关键词：

fluctuation; localization; Population dynamics;

D O I：

10.1007/BF01026554

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Interesting physics emerges from studying a population of reproducing individuals. Each can be regarded as a random walker, but it can either duplicate or die. Novel features of the collective behavior are quite surprising: if individuals reproduce or die freely, the life expectation is proportional to the size of the population, and if it is kept constant, the center of mass moves in space as if it were a single walker (i.e., the diffusion constant is independent of population's size). Biology-inspired interactions are also considered. © 1990 Plenum Publishing Corporation.

引用

页码：849 / 861

页数：13