Kinetic equation with exact charge conservation

被引：46

作者：

Ko, CM ^{[1
]}

Koch, V

Lin, ZW

Redlich, K

Stephanov, M

Wang, XN

机构：

[1] Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[3] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA

[4] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

[5] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[6] Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.86.5438

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A kinetic master equation for multiplicity distributions is formulated for charged particles which are created or destroyed only in pairs due to the conservation of their Abelian charge. It allows one to study time evolution of the multiplicity distributions in a relativistic many-body system with arbitrary average particle multiplicities. It is shown to reproduce the equilibrium results for both canonical (rare particles) and grand canonical (abundant particles) systems. For canonical systems, the equilibrium multiplicity is much lower and the relaxation time is much shorter than the naive extrapolation from grand canonical results. Implications for chemical equilibration in heavy-ion collisions are also discussed.

引用

页码：5438 / 5441

页数：4

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