Medium effects on the relaxation of dissipative flows in a hot pion gas

Abstract

The relaxation times over which dissipative fluxes restore their steady state values have been evaluated for a pion gas using the 14-moment method. The effect of the medium has been implemented through a temperature dependent pi-pi cross-section in the collision integral which is obtained by including one-loop self-energies in the propagators of the exchanged rho and sigma mesons. To account for chemical freeze out in heavy ion collisions, a temperature dependent pion chemical potential has been introduced in the distribution function. The temperature dependence of the relaxation times for shear and bulk viscous flows as well as the heat flow is significantly affected.

References in corpus (5)

• Transport Coefficients of Bulk Viscous Pressure in the 14-moment approximation
• Shear viscosity of a hadronic gas mixture
• Effect of spectral modification of $\rho$ on shear viscosity of a pion gas
• Real-time propagators at finite temperature and chemical potential
• Medium effects on the thermal conductivity of a hot pion gas

Cited by in corpus (7)

• Transport coefficients in Polyakov quark meson coupling model: a relaxation time approximation
• In-medium viscous coefficients of a hot hadronic gas mixture
• Medium effects on the electrical conductivity of a hot pion gas
• Bulk viscosity for pion and nucleon thermal fluctuation in the hadron resonance gas model
• Causality and stability analysis of first-order field redefinition in relativistic hydrodynamics from kinetic theory
• Thermal conductivity of hot pionic medium due to pion self-energy for $\pi \sigma$ and $\pi \rho$ loops
• Transport Coefficients of relativistic matter: A detailed formalism with a gross knowledge of their magnitude