NOVEL RELAXATION TIME APPROXIMATION: A CONSISTENT CALCULATION OF TRANSPORT COEFFICIENTS WITH QCD-INSPIRED RELAXATION TIMES

We use a novel formulation of the relaxation time approximation to consistently calculate the bulk and shear viscosity coefficients using QCD-inspired energy-dependent relaxation times and phenomenological thermal masses obtained from fits to lattice QCD thermodynamics. The matching conditions are conveniently chosen to simplify the computations.

Automated summary

In this study, a new formulation of the relaxation time approximation is used to accurately calculate the bulk and shear viscosity coefficients. This is achieved by utilizing QCD-inspired energy-dependent relaxation times and phenomenological thermal masses obtained from fits to lattice QCD thermodynamics. Conveniently chosen matching conditions are employed to simplify the computations.