https://doi.org/10.1051/epjconf/202225913006
Shear viscosity at finite baryon densities
1 Department of Physics, Columbia University, 538 W. 120th St., New York, NY 10027, USA
2 Department of Physics, Dr. Karl-Remeis Observatory - Astronomical Institute, Bamberg D-96049, Germany
3 Illinois Center for Advanced Studies of the Universe, Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
4 University of Wuppertal, Department of Physics, Wuppertal D-42097, Germany
5 Department of Physics, University of Houston, Houston, TX 77204, USA
* E-mail: egm2153@columbia.edu
Published online: 1 February 2022
We use the excluded volume Hadron Resonance Gas (HRG) model with the most up-to-date hadron list to calculate ηT/w at low temperatures and at finite baryon densities ρB. This ηT/w is then matched to a QCD-based shear viscosity calculation of the QGP for different profiles of ηT/w across T,μB including cross-over and critical point transitions. When compared to ideal hydrodynamic trajectories across T,μB, we find that the ηT/w(T,μB) profiles would require initial conditions at much larger baryon density to reach the same freeze-out point.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
