The impact of QCD plasma instabilities on bottom-up thermalization
The impact of QCD plasma instabilities on bottom-up thermalization
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QCD 等离子体不稳定性对自下而上热化的影响
DOI：
10.1088/1126-6708/2005/10/092
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
D. Bodeker
中科院分区：
文献类型：
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作者：
D. Bodeker
QCD等离子体不稳定性是由等离子体中粒子的各向异性动量分布引起的，它可能在重离子碰撞的热化过程中起重要作用。我们考虑具有两个不同粒子成分的等离子体，一个是强各向异性的，另一个是各向同性或近似各向同性的。各向同性分量并不消除不稳定性，但它降低了它们的增长率。我们研究了等离子体不稳定性对“自下而上”热化情景的第一阶段的影响，在该情景中出现了这样的双组分等离子体，并发现即使在非阿贝尔饱和不稳定性的情况下，也会定性地改变自下而上的图像。
QCD plasma instabilities, caused by an anisotropic momentum distributions of the particles in the plasma, are likely to play an important role in thermalization in heavy ion collisions. We consider plasmas with two different components of particles, one strongly anisotropic and one isotropic or nearly isotropic. The isotropic component does not eliminate instabilities but it decreases their growth rates. We investigate the impact of plasma instabilities on the first stage of the “bottom-up” thermalization scenario in which such a two-component plasma emerges, and find that even in the case of non-abelian saturation instabilities qualitatively change the bottom-up picture.