Abstract

Surface waves propagating in the semi-bounded collisional hot QCD medium (quark-gluon plasma) are considered. To investigate the effect of collisions as damping and non-ideality factor, the longitudinal and transverse dielectric functions of the quark-gluon plasma are used within the Bhatnagar–Gross–Krook (BGK) approach. The results were obtained both analytically and numerically in the long wavelength limit. First of all, collisions lead to smaller values of surface wave frequency and their stronger damping. Secondly, the results show that non-ideality leads to the appearance of a new branch of surface waves compared to the collisionless case. The relevance of the surface excitations (waves) for the QGP realized in experiments is discussed.

中文翻译：

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碰撞夸克-胶子等离子体中的表面波

摘要

考虑在半边界碰撞热QCD介质（夸克-胶子等离子体）中传播的表面波。为了研究碰撞作为阻尼和非理想因素的影响，在Bhatnagar-Gross-Krook（BGK）方法中使用了夸克-胶子等离子体的纵向和横向介电函数。结果是在长波长范围内通过分析和数值获得的。首先，碰撞导致较小的表面波频率值和更强的阻尼。其次，结果表明，与无碰撞情况相比，非理想状态导致出现了新的表面波分支。讨论了在实验中实现的QGP的表面激励（波）的相关性。