Refractive Index of an anisotropic Quark-Gluon-Plasma medium in an effective description of hot QCD
The present investigation involves explorations on the chromo-dielectric properties of the hot QCD medium produced in relativistic heavy-ion collisions in terms of refractive index. The anisotropic aspect of the hot QCD medium are incorporated by introducing the anisotropy in a particular direction. The isotropic/equilibrium modeling is done within an effective quasi-particle model of hot QCD medium. The possibilities of negative refraction in the medium is also explored in terms of the Depine-Lakhtakia index in the isotropic case and defining refractive indices in appropriate directions in the anisotropic case. Interestingly, both anisotropy and medium effects play significant roles in deciding the optical properties of the hot QCD/Quark-Gluon-Plasma (QGP) medium.