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The hadron resonance gas (HRG) model is often believed to correctly describe the confined phase of QCD. This assumption is the basis of many phenomenological works on QCD thermodynamics and of the analysis of hadron yields in relativistic…

We investigate extensions of the Hadron Resonance Gas (HRG) Model beyond the ideal case by incorporating both attractive and repulsive interactions into the model. When considering additional states exceeding those measured with high…

核理论 · 物理学 2023-03-22 Jamie M. Karthein , Volker Koch , Claudia Ratti , Volodymyr Vovchenko

The hadron resonance gas (HRG) model and its extensions are often used to describe the hadronic phase of strongly interacting matter. In our work we use lattice-QCD simulations with temporal extents of $N_\tau=8,10$ and $12$ to quantify…

We present, in the framework of the interacting hadron resonance gas, an evaluation of thermodynamical quantities. The interaction is modelled via a correction for the finite size of the hadrons. We investigate the sensitivity of the model…

核理论 · 物理学 2015-06-03 A. Andronic , P. Braun-Munzinger , J. Stachel , M. Winn

We compare higher moments of baryon numbers measured at the RHIC heavy ion collision experiments with those by the lattice QCD calculations. We employ the canonical approach, in which we can access the real chemical potential regions…

高能物理 - 格点 · 物理学 2018-11-07 D. Boyda , V. G. Bornyakov , V. Goy , A. Molochkov , A. Nakamura , A. Nikolaev , V. I. Zakharov

Fluctuations of conserved charges allow to study the chemical composition of hadronic matter. A comparison between lattice simulations and the Hadron Resonance Gas (HRG) model suggested the existence of missing strange resonances. To…

I describe the results for the critical line and the thermodynamics of different phases of QCD which have been obtained by lattice simulations with an imaginary chemical potential, and review motivations and merits of the different…

高能物理 - 格点 · 物理学 2008-11-26 M. P. Lombardo

We study four flavor QCD at nonzero temperature and density by analytic continuation from an imaginary chemical potential. The explored region is T = 0.95 T_c < T < 3.5 T_c, and the baryochemical potentials range from 0 to approx. 500 MeV.…

高能物理 - 格点 · 物理学 2011-09-29 Massimo D'Elia , Maria Paola Lombardo

We calculate Fourier coefficients of the net-baryon number as a function of a purely imaginary chemical potential. The asymptotic behavior of these coefficients is governed by the singularity structure of the QCD partition function and thus…

高能物理 - 格点 · 物理学 2023-01-13 Christian Schmidt

An extension of Hadron Resonance Gas (HRG) model is constructed to include interactions using relativistic virial expansion of partition function. The non-interacting part of the expansion contains all the stable baryons and mesons and the…

核理论 · 物理学 2018-05-11 Ashutosh Dash , Subhasis Samanta , Bedangadas Mohanty

The Hadron-Resonance Gas (HRG) approach - used to model hadronic matter at small baryon potentials $\mu_B$ and finite temperature $T$ - is extended to finite and large chemical potentials by introducing interactions between baryons in line…

高能物理 - 唯象学 · 物理学 2018-07-25 Thorsten Steinert , Wolfgang Cassing

We investigate the effect of repulsive interaction between hadrons on the susceptibilities of conserved charges, namely baryon number (B), electric charge (Q) and strangeness (S). We estimate second fourth and sixth-order susceptibilities…

高能物理 - 唯象学 · 物理学 2024-12-17 Somenath Pal , Guruprasad Kadam , Abhijit Bhattacharyya

We present here continuum extrapolated results for all 2nd order cumulants using the most recent results obtained by the HotQCD collaboration in (2+1)-flavor QCD. We constrain the applicability of various HRG models by presenting a detailed…

高能物理 - 格点 · 物理学 2022-02-16 Jishnu Goswami , Frithjof Karsch , Swagato Mukherjee , Peter Petreczky , Christian Schmidt

We simultaneously incorporate two common extensions of the hadron resonance gas model, namely the addition of extra, unconfirmed resonances to the particle list and the excluded volume repulsive interactions. We emphasize the complementary…

核理论 · 物理学 2021-11-09 Jamie M. Karthein , Volker Koch , Claudia Ratti , Volodymyr Vovchenko

We compare the lattice results on QCD phase diagram for two and three flavors with the hadron resonance gas model (HRGM) calculations. Lines of constant energy density $\epsilon$ have been determined at different baryo-chemical potentials…

高能物理 - 唯象学 · 物理学 2009-11-10 A. Tawfik

The standard implementation of the HRG model has been shown to be unable to describe all the available data on QCD matter. Here we show the balance of repulsive and attractive hadronic interactions on QCD thermodynamics through observables…

高能物理 - 唯象学 · 物理学 2018-03-14 Paolo Alba

We match three hadronic equations of state at low energy densities to a perturbatively computed equation of state of quarks and gluons at high energy densities. One of them includes all known hadrons treated as point particles, which…

核理论 · 物理学 2014-09-05 M. Albright , J. Kapusta , C. Young

We compare recent lattice QCD calculations of higher order cumulants of net-strangeness fluctuations with hadron resonance gas (HRG) model calculations. Up to the QCD transition temperature Tc=( 154 +/- 9) MeV we find good agreement between…

高能物理 - 格点 · 物理学 2013-12-31 Frithjof Karsch

We propose a new model for hadrons with quantum mechanical attractive and repulsive interactions sensitive to some spatial correlation length parameter inspired by Beth-Uhlenbeck quantum mechanical non-ideal gas model…

高能物理 - 唯象学 · 物理学 2020-11-11 Mahmoud Hanafy , Muhammad Maher

We compare lattice QCD results for appropriate combinations of net strangeness fluctuations and their correlations with net baryon number fluctuations with predictions from two hadron resonance gas (HRG) models having different strange…

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