English

Shear viscosity at finite baryon densities

High Energy Physics - Phenomenology 2022-02-16 v1 Nuclear Theory

Abstract

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

Keywords

Cite

@article{arxiv.2108.05300,
  title  = {Shear viscosity at finite baryon densities},
  author = {Emma McLaughlin and Jacob Rose and Travis Dore and Paolo Parotto and Claudia Ratti and Jacquelyn Noronha-Hostler},
  journal= {arXiv preprint arXiv:2108.05300},
  year   = {2022}
}