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Equation of state of a hot-and-dense quark gluon plasma: lattice simulations at real $\mu_B$ vs. extrapolations

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arxiv 2208.05398 v2 pith:2HMS5Z25 submitted 2022-08-10 hep-lat hep-phnucl-th

Szabolcs Borsanyi , Zoltan Fodor , Matteo Giordano , Jana N. Guenther , Sandor D. Katz , Attila Pasztor , Chik Him Wong This is my paper · ORCID
classification hep-lathep-phnucl-th
keywords equationgluonplasmaquarkschemesstateadditionapproximation
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The equation of state of the quark gluon plasma is a key ingredient of heavy ion phenomenology. In addition to the traditional Taylor method, several novel approximation schemes have been proposed with the aim of calculating it at finite baryon density. In order to gain a pragmatic understanding of the limits of these schemes, we compare them to direct results at $\mu_B>0$, using reweighting techniques free from an overlap problem. We use 2stout improved staggered fermions with 8 time-slices and cover the entire RHIC BES range in the baryochemical potential, up to $\mu_B/T=3$.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. High-precision baryon number cumulants from lattice QCD in a finite box: cumulant ratios, Lee-Yang zeros and critical endpoint predictions

    hep-lat 2025-07 conditional novelty 6.0 of 10

    High-statistics lattice QCD data up to tenth order, analyzed with a Roberge-Weiss-symmetric rational ansatz, place an 84% upper bound of 103 MeV on the QCD critical endpoint temperature.

  2. Lattice QCD constraints on the critical point from an improved precision equation of state

    hep-lat 2025-02 conditional novelty 6.0 of 10

    An improved lattice QCD equation of state, combined with entropy contours continued from imaginary chemical potential, excludes a QCD critical point below μB = 450 MeV at 2σ confidence.

  3. Taste breaking in the minimally doubled Karsten-Wilczek action and its tree-level improvement

    hep-lat 2025-02 conditional novelty 6.0 of 10

    A tree-level Naik improvement of the Karsten-Wilczek lattice fermion action reduces taste breaking and noise in mixed-action tests, bringing its continuum pion decay constant in line with staggered results.

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