软光子与硬热循环
高能物理 - 唯象学
2007-05-23 v1
摘要
我们在硬热循环展开框架中计算了热 quark-gluon 等离子体在热平衡条件下产生软光子和夸克对的速率,计算至2循环阶。强共线发散现象导致 perturbative 展开的阶数相互混合,以至于2循环阶实际上占主导地位。更精确地说,对于生产的光子为无质量情况,本应为常数阶数的角度积分表现为1/g的幂,从而破坏了标准HTL power计数规则。
引用
@article{arxiv.hep-ph/9710203,
title = {Soft photons and hard thermal loops},
author = {Francois Gelis},
journal= {arXiv preprint arXiv:hep-ph/9710203},
year = {2007}
}
备注
13 pages, Latex2e, 11 postscript figures included with the package graphics. Talk given at the RHIC Summer Study '97, 6-16 July 1997, Brookhaven National Laboratory, USA