Equations, chromopermittivity, and instabilities of the quark-gluon medium

摘要

The high energy behavior of the quark-gluon medium described by QCD equations is considered. Within the assumptions of the linear response theory the chromopermittivity of the medium is introduced and it is argued that it exceeds 1 at TeV energies. The dispersion equations show that the proper modes of the medium reveal instability and the parton currents traversing it induce the emission of Cherenkov gluons.