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 (17)

• Collective flow and viscosity in relativistic heavy-ion collisions
• Conformal Relativistic Viscous Hydrodynamics: Applications to RHIC results at sqrt(s_NN) = 200 GeV
• Critical point of QCD at finite T and μ, lattice results for physical quark masses
• New Developments in Relativistic Viscous Hydrodynamics
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• Causal Theories of Dissipative Relativistic Fluid Dynamics for Nuclear Collisions
• Transport Coefficients of Bulk Viscous Pressure in the 14-moment approximation
• Baryonic Resonances from Baryon Decuplet-Meson Octet Interaction
• Shear viscosity of a hadronic gas mixture
• The Viscosity of Meson Matter
• From kinetic theory to dissipative fluid dynamics
• Pion gas viscosity at low temperature and density
• Analytic structure of rho meson propagator at finite temperature
• Effect of spectral modification of $\rho$ on shear viscosity of a pion gas
• Medium effects on the viscosities 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 (14)

• Transport coefficients in Polyakov quark meson coupling model: a relaxation time approximation
• Shear and Bulk Viscosities of Quark Matter from Quark-Meson Fluctuations in the Nambu--Jona-Lasinio model
• Calculations of Shear, Bulk viscosities and Electrical conductivity in Polyakov-Quark-Meson model
• Phenomenological bound on the viscosity of the hadron resonance gas
• Medium effects on the electrical conductivity of a hot pion gas
• In-medium viscous coefficients of a hot hadronic gas mixture
• Transport responses from rate of decay and scattering processes in the Nambu--Jona-Lasinio model
• Bulk viscosity for pion and nucleon thermal fluctuation in the hadron resonance gas model
• Shear viscosity of pionic and nucleonic components from their different possible mesonic and baryonic thermal fluctuations
• A comparative study on two different expressions of Bulk viscosity in the PNJL 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
• In-medium thermal conductivity and diffusion coefficients of a hot hadronic gas mixture