Equation of state of QCD at finite chemical potential from an alternative expansion scheme

2021/11/30 by Parotto, Paolo, Borsanyi, Szabolcs, Fodor, Zoltan +6
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2112.00083

Abstract

The equation of state of Quantum Chromodynamics (QCD) at finite density is currently known only in a limited range in the baryon chemical potential μ_B. This is due to fundamental shortcomings of traditional methods such as Taylor expansion around μ_B=0. In this contribution, we present an alternative scheme that displays substantially improved convergence over the Taylor expansion method. We calculate the alternative expansion coefficients in the continuum, and show our results for the thermodynamic observables up to μ_B/T≤3.5.

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