Hadron resonance gas model and the transport properties of hadronic matter

Hadron resonance gas model (HRG) is an  effective model describing hadronic phase of strongly interacting matter. HRG is an important model not only because it has been used for various purposes in heavy ion collision phenomenology but also because its estimations of the themodynamical quantities has been used as a benchmark by the lattice QCD community for the hadronic phase. In spite of its huge success in some aspects of strongly interacting matter, the traditional non-interacting HRG model has some shortcomings when some other aspects of are concerned. Taking in to account these aspects, ideal HRG model can be systematically improved without loosing its original simplicity and success. In this talk I will discuss possible improvements in ideal HRG model. Further, I will discuss the transport properties of hadronic matter using relativistic kinetic theory within ambit of HRG model.