Finite chemical potential equation of state for QCD from an alternative expansion scheme

¹ University of Wuppertal, Department of Physics, Wuppertal D-42119, Germany
² Pennsylvania State University, Department of Physics, State College, PA 16801, USA
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 Aix Marseille Univ., Université de Toulon, CNRS, CPT, Marseille, France
⁶ Eötvös University, Budapest 1117, Hungary
⁷ Department of Physics, University of Houston, Houston, TX 77204, USA

^* Speaker: parotto@uni-wuppertal.de

Published online: 1 February 2022

Abstract

The Taylor expansion approach to the equation of state of QCD at finite chemical potential struggles to reach large chemical potential μ_B. This is primarily due to the intrinsic diffculty in precisely determining higher order Taylor coefficients, as well as the structure of the temperature dependence of such observables. In these proceedings, we illustrate a novel scheme [1] that allows us to extrapolate the equation of state of QCD without suffering from the poor convergence typical of the Taylor expansion approach. We continuum extrapolate the coefficients of our new expansion scheme and show the thermodynamic observables up to μ_B/T ≤ 3.5.