Strangeness-neutral equation of state for QCD with a critical point

J. M. Karthein, D. Mroczek, A. R. Nava Acuna, J. Noronha-Hostler, P. Parotto, D. R.P. Price, C. Ratti

Research output: Contribution to journalArticlepeer-review


We present a strangeness-neutral equation of state for QCD that exhibits critical behavior and matches lattice QCD results for the Taylor-expanded thermodynamic variables up to fourth order in μB/ T. It is compatible with the SMASH hadronic transport approach and has a range of temperatures and baryonic chemical potentials relevant for phase II of the Beam Energy Scan at RHIC. We provide an updated version of the software BES-EoS, which produces an equation of state for QCD that includes a critical point in the 3D Ising model universality class. This new version also includes isentropic trajectories and the critical contribution to the correlation length. Since heavy-ion collisions have zero global net-strangeness density and a fixed ratio of electric charge to baryon number, the BES-EoS is more suitable to describe this system. Comparison with the previous version of the EoS is thoroughly discussed.

Original languageEnglish (US)
Article number621
JournalEuropean Physical Journal Plus
Issue number6
StatePublished - Jun 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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