Lattice QCD equation of state at finite chemical potential from an alternative resummation: Strangeness neutrality and beyond

¹ Pennsylvania State University, Department of Physics, University Park, PA 16802, USA
² Department of Physics, Wuppertal University, Gaussstr. 20, D-42119, Wuppertal, Germany
³ Inst. for Theoretical Physics, ELTE Eötvös Loránd University, Pázmány P. sétány 1/A, H-1117 Budapest, Hungary
⁴ Jülich Supercomputing Centre, Forschungszentrum Jülich, D-52425 Jülich, Germany
⁵ Physics Department, UCSD, San Diego, CA 92093, USA
⁶ Department of Physics, University of Houston, Houston, TX 77204, USA

^* e-mail: paolo.parotto@gmail.com

Published online: 1 March 2023

Abstract

In this contribution we present a resummation of the Quantum Chromodynamics (QCD) equation of state from lattice simulations at imaginary chemical potentials. We generalize the scheme introduced in a previous work [1], to the case of non-zero strangeness chemical potential. We present continuum extrapolated results for thermodynamic observables in the temperature range 130MeV ≤ T ≤ 280 MeV, for chemical potentials up to μ_B/T = 3:5, along the strangeness neutral line. Furthermore, we relax the constraint of strangeness neutrality, by extrapolating to small values of the strangeness-to-baryon-number ratio R = n_S / n_B.