Strangeness neutral equation of state for QCD with a critical point
Abstract
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 . 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 trejectories 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.
Keywords
Cite
@article{arxiv.2103.08146,
title = {Strangeness neutral equation of state for QCD with a critical point},
author = {J. M. Stafford and D. Mroczek and A. R. Nava Acuna and J. Noronha-Hostler and P. Parotto and D. R. P. Price and C. Ratti},
journal= {arXiv preprint arXiv:2103.08146},
year = {2021}
}
Comments
11 pages, 11 figures