Wed·May 27, 2020Wednesday·May 27, 2020

1. 01*

   Exploring QCD Matter at High Baryon Density

   J. D. Brandenburg (for the STAR Collaboration)🇺🇸

   This contribution presents a brief summary of the recent past efforts to experimentally explore the QCD phase diagram at high baryon chemical potentials through heavy-ion collisions. A few measurements are highlighted to present the current status in the search for a first-order phase transition, for a possible critical endpoint, and for evidence of chiral symmetry restoration. Finally, the outlook for the ongoing beam energy scan II program and future experiments at the FAIR complex are discussed.

   nucl-exJ.Phys.Conf.Ser.(2020)·1 citation
2. 02*

   Hadronic transport coefficients from the linear sigma model at finite temperature

   Matthew Heffernan🇨🇦 · Sangyong Jeon🇨🇦 · Charles Gale🇨🇦

   We investigate general frameworks for calculating transport coefficients for quasiparticle theories at finite temperature. Hadronic transport coefficients are then computed using the linear sigma model (LSM). The bulk viscosity over entropy density ($\zeta /s$) is evaluated in the relaxation time approximation (RTA) and the specific shear viscosity ($\eta /s$) and static electrical conductivity (${\sigma }_{el}/T$) are both obtained in the RTA and using a functional variational approach. Results are shown for different values of the scalar-isoscalar hadron vacuum mass with in-medium masses for the interacting fields. The advantages and limitations of the LSM for studies of strongly interacting matter out of equilibrium are discussed and results are compared with others in the literature.

   ↳ hep-phnucl-exnucl-thPRC(2020)·17 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.