Causal diffusion and the survival of charge fluctuations in nuclear collisions

被引：53

作者：

Aziz, MA ^{[1
]}

Gavin, S ^{[1
]}

机构：

[1] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA

来源：

PHYSICAL REVIEW C | 2004年 / 70卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevC.70.034905

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Diffusion may obliterate fluctuation signals of the QCD phase transition in nuclear collisions at SPS and RHIC energies. We propose a hyperbolic diffusion equation to study the dissipation of net charge fluctuations. This equation is needed in a relativistic context, because the classic parabolic diffusion equation violates causality. We find that causality substantially limits the extent to which diffusion can dissipate these fluctuations.

引用

页码：0349051 / 0349058

页数：8

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