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QCD equation of state and thermodynamic observables from computationally minimal Dyson-Schwinger Equations

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arxiv 2310.18383 v1 pith:CYK2Q6TB submitted 2023-10-27 hep-ph nucl-exnucl-th

Yi Lu , Fei Gao , Yu-Xin Liu , Jan M. Pawlowski This is my paper
classification hep-phnucl-exnucl-th
keywords minimalobservablesdensityequationapproximationdyson-schwingerequationsfinite
verification ladder T0 review T1 audit T2 compute T3 formal
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We study the QCD equation of state and other thermodynamic observables including the isentropic trajectories and the speed of sound. These observables are of eminent importance for the understanding of experimental results in heavy ion collisions and also provide a QCD input for studies of the timeline of heavy-ion-collisions with hydrodynamical simulations. They can be derived from the quark propagator whose gap equation is solved within a minimal approximation to the Dyson-Schwinger equations of QCD at finite temperature and density. This minimal approximation aims at a combination of computational efficiency and simplification of the truncation scheme while maintaining quantitative precision. This minimal DSE scheme is confronted and benchmarked with results for correlation functions and observables from first principles QCD lattice at vanishing density and quantitative functional approaches at finite density.

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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. Lee--Yang edge singularities in Nonlocal Nambu--Jona-Lasinio Model

    hep-ph 2025-09 conditional novelty 6.0 of 10

    In a nonlocal NJL model, Lee-Yang edge singularities follow trajectories that end at the QCD critical point, with critical exponent 1.494(1) matching mean-field scaling.

  2. Quark mass dependence of a QCD critical point and structure of the Columbia plot

    hep-ph 2025-07 conditional novelty 5.0 of 10

    In a truncated Dyson-Schwinger setup, the QCD critical point moves to higher temperature and lower baryon chemical potential as light quark masses decrease toward the chiral limit.

  3. The effect of charm quark on the QCD chiral phase diagram

    hep-ph 2026-03 conditional novelty 4.0 of 10

    Adding a dynamical charm quark moves the predicted QCD critical endpoint from (102.9 MeV, 618.8 MeV) to (104.3 MeV, 600.1 MeV).

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