BULK VISCOSITY IN A PLASMA OF GRIBOV-ZWANZIGER GLUONS

We investigate dynamic properties of a plasma whose constituents are confining gluons resulting from the Gribov-Zwanziger quantisation. In a static formulation, this system reproduces qualitatively the pure-glue equation of state and thereby encodes crucial features of the phase transition. The dynamic description proposed in this work allows us to study close-to-equilibrium transport phenomena with the inclusion of confinement effects. In particular, we determine the non-equilibrium behaviour of the interaction measure (trace anomaly) and find the form of the bulk viscosity coefficient. The latter can be used in phenomenological applications to heavy-ion collisions.