Armando Puglisi

Electric Conductivity from the solution of the Relativistic Boltzmann Equation

We present numerical results of electric conductivity

Shear viscosity and chemical equilibration of the QGP

{\ensuremath{\sigma}}_{\text{el}}

Shear viscosity

of a fluid obtained solving the relativistic transport Boltzmann equation in a box with periodic boundary conditions. We compute

\eta

{\ensuremath{\sigma}}_{\text{el}}

to electric conductivity

using two methods: the definition itself, i.e., applying an external electric field, and the evaluation of the Green-Kubo relation based on the time evolution of the current-current correlator. We find a very good agreement between the two methods. We also compare numerical results with analytic formulas in relaxation time approximation (RTA) where the relaxation time for

\sigma_{el}

{\ensuremath{\sigma}}_{\text{el}}

ratio for the Quark Guon Plasma

is determined by the transport cross section

Electric Conductivity of the QGP

{\ensuremath{\sigma}}_{\text{tr}}

Transport approach to anisotropic flows from viscous hydro regime to high pT

, i.e., the differential cross section weighted with the collisional momentum transfer. We investigate the electric conductivity dependence on the microscopic details of the two-body scatterings: isotropic and anisotropic cross section as well as massless and massive particles. We find that the RTA underestimates considerably

Early Stages of Relativistic Heavy Ion Collisions

{\ensuremath{\sigma}}_{\text{el}}