arXiv 1109.40832011-09hep-ph

用硬热圈微扰理论研究夸克-胶子等离子体中光的Refractive Index

Refractive Index of Light in the Quark-Gluon Plasma with the Hard-Thermal-Loop Perturbation Theory

Juan Liu, M. J. Luo, Qun Wang, Hao-jie Xu

备注：: 12 pages, 5 figures; v2: published version, title changed in accordance with PRD editor's suggestion, minor clarifications and references added, figures updated, typos corrected
发表信息：: Phys. Rev. D 84, 125027 (2011)
DOI：: 10.1103/PhysRevD.84.125027

摘要：

用硬热环微扰理论计算了夸克-胶子等离子体（QGP）的介电常数和磁导率。计算了可磁化和不可磁化等离子体的折射率。在可磁化等离子体中，在磁导率和折射率中存在频率极$ω_{mp}$。在波数为$ω\in[k,ω_{mp}]$（$k$）的范围内，折射率变为负值，但没有发现传播模式。在不可磁化的等离子体中，磁导率和折射率总是正值。这标志着弱耦合等离子体与强耦合等离子体的主要区别，在强耦合等离子体中，全息理论中存在负折射。

英文摘要：

The electric permittivity and magnetic permeability for the quark-gluon plasma (QGP) is calculated within the hard-thermal-loop (HTL) perturbation theory. The refractive indices in the magnetizable and non-magnetizable plasmas are calculated. In a magnetizable plasma, there is a frequency pole $ω_{mp}$ in the magnetic permeability and the refractive index. The refractive index becomes negative in the range $ω\in[k,ω_{mp}]$, where $k$ is the wave number, but no propagating modes are found. In a non-magnetizable plasma, the magnetic permeability and the refractive index are always positive. This marks the main distinction of a weakly coupled plasma from a strongly coupled one, where the negative refraction is shown to exist in a holographic theory.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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