Hard loop approach to anisotropic systems - art. no. 036011

Anisotropic systems of quarks and gluons, which at least for sufficiently s hort space-time intervals can be treated as homogeneous and static, an cons idered. The gluon polarization tensor of such a system is explicitly comput ed within the semiclassical kinetic and hard loop diagrammatic theories. Th e equivalence of the two approaches is demonstrated. The quark self-energy is computed as well, and finally, the dispersion relations of quarks and gl uons in the anisotropic medium are discussed.