Dissipative properties of hot and dense hadronic matter in an excluded-volume hadron resonance gas model
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In this paper, the authors estimate shear and bulk viscosities of hadronic matter using relativistic Boltzmann equation in relaxation time approximation within ambit of excluded volume hadron resonance gas (EHRG) model.Abstract:
In this work we estimate dissipative properties viz: shear and bulk viscosities of hadronic matter using relativistic Boltzmann equation in relaxation time approximation within ambit of excluded volume hadron resonance gas (EHRG) model. We find that at zero chemical potential the shear viscosity to entropy ratio (�/s) decreases with temperature and reaches very close to Kovtun-SonStarinets (KSS) bound as compared to the results based on molecular kinetic theory approach. At finite chemical potential this ratio shows same behavior as a function of temperature but goes below KSS bound. We further find that along chemical freezout line �/s increases monotonically while the bulk viscosity to entropy ratio (�/s) decreases monotonically.read more
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