Interacting hadron resonance gas model in K-matrix formalism

Understand

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 interacting part contains all the higher mass resonances which decay into two stable hadrons.
• The virial coefficients are related to the phase shifts which are calculated using K-matrix formalism in the present work.
• We have calculated various thermodynamics quantities like pressure, energy density, and entropy density of the system.