Abstract
We discuss the interacting hadron resonance gas model to describe the thermodynamics of hadronic matter. While the attractive interaction between hadrons is taken care of by including all the resonances with zero width, the repulsive interactions are included by considering density-dependent mean field potentials. The bulk thermodynamic quantities are confronted with the lattice quantum chromodynamics simulation results at zero as well as at finite baryon chemical potential. We further estimate the shear and bulk viscosity coefficients of hot and dense hadronic matter within the ambit of this interacting hadron resonance gas model.
Highlights
Understanding the phase diagram of strongly interacting matter is one of the important and challenging topics of current research in strong interaction physics—both theoretically and experimentally
In this paper we confronted the relativistic mean field hadron resonance gas model (RMFHRG) with Lattice quantum chromodynamics (LQCD) at zero as well as finite density
The thermodynamic quantities estimated within the RMFHRG are found to be in reasonable agreement with LQCD at zero as well as finite chemical potential
Summary
Understanding the phase diagram of strongly interacting matter is one of the important and challenging topics of current research in strong interaction physics—both theoretically and experimentally. The hadron resonance gas model is the statistical model of QCD describing the low temperature hadronic phase of quantum chromodynamics This model is based on the so-called Dashen-Ma-Bernstein theorem, which allows us to compute the partition function of the interacting system of hadrons in terms of the scattering matrix [15]. They showed that the deviations of higher order fluctuations estimated using the ideal HRG can be accounted for by means of repulsive interactions treated in a mean field way. While the attractive interactions between hadrons are accounted for by including all the resonance states up to 2.25 GeV, the short-range repulsive interactions among hadrons are treated in the mean field approach We call this model the relativistic mean field hadron resonance gas model (RMFHRG). IV, we summarize the findings of the present investigation and give a possible outlook
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