Speaker
Description
We investigate the equation of state (EoS) for hot and dense hadronic matter within an extended Chiral Mean Field (CMF) model framework that incorporates the interactions of thermally excited mesons, including both non-strange and strange species. In this approach, the in-medium masses of pseudoscalar and vector mesons are evaluated through the explicit chiral symmetry-breaking and vector-interaction terms in the Lagrangian, respectively, before applying the mean-field approximation. These medium-modified meson properties, particularly the inclusion of strange mesons such as kaons and phi mesons, introduce additional feedback into the CMF equations of motion, leading to a revised equation of state. The impact of this refinement is analyzed by comparing the model predictions with recent lattice QCD data and other hadronic descriptions, such as the hadron resonance gas model. The modified CMF framework, featuring an improved meson treatment (mCMF), demonstrates enhanced consistency with lattice-QCD results for thermodynamic observables across a broad range of temperatures and baryon chemical potentials.