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

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arxiv 2112.00083 v1 pith:JC4PHIHA submitted 2021-11-30 hep-lat hep-phnucl-th

Paolo Parotto , Szabolcs Borsanyi , Zoltan Fodor , Jana N. Guenther , Ruben Kara , Sandor D. Katz , Attila Pasztor , Claudia Ratti
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Kalman K. Szabo
This is my paper · ORCID
classification hep-lathep-phnucl-th
keywords expansionalternativechemicalequationfinitepotentialschemestate
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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 $\mu_B$. This is due to fundamental shortcomings of traditional methods such as Taylor expansion around $\mu_B=0$. 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 $\mu_B/T\le3.5$.

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