Shear viscosity at finite baryon densities

Abstract

We use the excluded volume Hadron Resonance Gas (HRG) model with the most up-to-date hadron list to calculate $\eta T/w$ at low temperatures and at finite baryon densities ${\rho }_B$. This $\eta T/w$ is then matched to a QCD-based shear viscosity calculation of the QGP for different profiles of $\eta T/w$ across {T,${\mu }_B$} including cross-over and critical point transitions. When compared to ideal hydrodynamic trajectories across {T,${\mu }_B$}, we find that the $\eta T/w(T,{\mu }_B)$ profiles would require initial conditions at much larger baryon density to reach the same freeze-out point.

References in corpus (11)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• The QCD crossover at finite chemical potential from lattice simulations
• Transport Coefficients of Hadronic Matter near $T_c$
• Critical point in the phase diagram of primordial quark-gluon matter from black hole physics
• Quench action and Renyi entropies in integrable systems
• Hadron Mass Spectrum and the Shear Viscosity to Entropy Density Ratio of Hot Hadronic Matter
• Viscosity in the excluded volume hadron gas model
• Shear viscosity of a hadron gas and influence of resonance lifetimes on relaxation time
• Far-from-equilibrium search for the QCD critical point
• Towards QCD-assisted hydrodynamics for heavy-ion collision phenomenology
• Dynamical initialization and hydrodynamic modeling of relativistic heavy-ion collisions