Dense Nuclear Matter Equation of State from Heavy-Ion Collisions

Sorensen, Agnieszka; Agarwal, Kshitij; Brown, K. W.; Chajęcki, Z.; Danielewicz, Paweł; Drischler, C.; Gandolfi, Stefano; Holt, Jeremy W.; Kaminski, Matthias; Ko, C. M.; Kumar, Rohit; Li, Bao-An; Lynch, W. G.; McIntosh, A. B.; Newton, William E.; Pratt, Scott; Savchuk, О.; Stefaniak, M.; Tews, Ingo; Tsang, M.B.; Vogt, R.; Wolter, H.H.; Zbroszczyk, H.; Andronic, A.; Bass, Steffen A.; Chbihi, A.; Colonna, M.; Cozma, M.D.; Dexheimer, V.; Dong, Xinyong; Dore, Travis; Du, Lingyan; Harris, Steven P.; Huang, Huan Zhong; Jiménez, José Cenizo; Kapusta, Joseph I.; Févre, A. Le; McLerran, Larry; Jacquelyn, Noronha-Hostler,; Plumberg, Christopher; Randrup, J.; Reddy, Sanjay G.; Schmidt, Hans-Rudolf; Senger, P.; Seto, R.; Shen, Chun; Steinheimer, Jan; Stroth, J.; Sturm, Christian; Sun, Kai-Jia; Trautmann, W.; Verde, G.; Vovchenko, Volodymyr; Xu, N.

doi:10.48550/arxiv.2301.13253

Cited by 10 publications

(13 citation statements)

References 685 publications

(1,017 reference statements)

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“…The truncated perturbative series depends on the unphysical renormalization scale Λ = 2 3 µX, which is related to the characteristic hard scale of the process-the baryon number chemical potential µ-via the dimensionless scaling factor X. Consequently, the posterior probability of a Bayesian model is also sensitive to the choice of X. As there is no physical reason to prefer one scale choice over another, the scale dependence must be considered in estimating the observable's true value.…”

Section: B Incorporating Scale Dependencementioning

confidence: 99%

Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state

Gorda¹,

Komoltsev²,

Kurkela³

et al. 2023

Preprint

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The equation of state of neutron-star cores can be constrained by requiring a consistent connection to the perturbative Quantum Chromodynamics (QCD) calculations at high densities. The constraining power of the QCD input depends on uncertainties from missing higher-order terms, the choice of the unphysical renormalization scale, and the reference density where QCD calculations are performed. Within a Bayesian approach, we discuss the convergence of the perturbative QCD series, quantify its uncertainties at high densities, and present a framework to systematically propagate the uncertainties down to neutron-star densities. We find that the effect of the QCD input on the neutron-star inference is insensitive to the various unphysical choices made in the uncertainty estimation.

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Section: B Incorporating Scale Dependencementioning

confidence: 99%

Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state

Gorda¹,

Komoltsev²,

Kurkela³

et al. 2023

Preprint

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“…Comparisons of hydrodynamics and/or transport model predictions with experimental data of various components of nuclear collective flow in heavy-ion collisions over a broad energy range have revealed much needed information about the Equation of State (EOS) and transport properties (e.g, viscosity or in-medium nucleon-nucleon (NN) scattering cross sections) of hot and dense nuclear matter [1,2,3,4,5,6,7,8,9,10] while many interesting issues remain to be addressed [11,12,13,14]. In the intermediate beam energy range from around 30 MeV/nucleon to several GeV/nucleon, it is know that there is a degeneracy between the stiffness (normally measured/labeled by using the incompressibility K of symmetric nuclear matter at saturation density ρ 0 ) of nuclear EOS and the in-medium baryon-baryon scattering cross sections (σ med N N ) in describing flow observables, see, e.g., Refs.…”

Section: Introductionmentioning

confidence: 99%

Bayesian inference of in-medium baryon-baryon scattering cross sections from HADES proton flow data

Li¹,

Wang²

2023

Preprint

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Within a Bayesian statistical framework using a Gaussian Process emulator for an isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model simulator of heavy-ion reactions at intermediate energies, we infer from the HADES proton flow data the posterior probability distribution functions of in-medium baryon-baryon scattering cross section modification factor X with respect to free-space and the corresponding incompressibility K of nuclear matter as well as their correlation function. The mean value of X is found to be X = 1.32 +0.28 −0.40 at 68% confidence level, providing circumstantial evidence for enhanced baryon-braryon scattering cross sections in hot and dense nuclear matter.

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“…The properties of the QCD phase diagram in the temperature-baryon chemical potential plane are studied both experimentally and theoretically very intensively; see, e.g., [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Lee–Yang Zeroes in the Baryon Fugacity Plane: The Role of High Densities

Gerasimeniuk,

Bornyakov,

Goy

et al. 2023

Particles

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We compute the canonical partition functions and the Lee–Yang zeros in Nf=2 lattice QCD at temperature T=1.20Tc lying above the Roberge–Weiss phase transition temperature TRW. The phase transition is characterized by the discontinuities in the baryon number density at specific values of imaginary baryon chemical potential. We further develop our method to compute the canonical partition functions using the asymptotic expression for respective integral. Then, we compute the Lee–Yang zeros and study their behavior in the limit of high baryon density.

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Dense Nuclear Matter Equation of State from Heavy-Ion Collisions

Abstract: C. Interplay between nucleonic and partonic degrees of freedom: SRC effects on nuclear EOS, heavy-ion reactions, and neutron stars D. High-density symmetry energy above 2n 0 E. Density-dependence of neutron-proton effective mass splitting in neutron-rich matter

Cited by 10 publications

References 685 publications

Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state

Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state

Bayesian inference of in-medium baryon-baryon scattering cross sections from HADES proton flow data

Lee–Yang Zeroes in the Baryon Fugacity Plane: The Role of High Densities

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