Speaker
Описание
We have provided a modified grand canonical ensemble formulation for a multi-component hadronic resonance gas system. We have considered the attractive as well as repulsive interaction among the constituent baryons (antibaryons) and obtained a van der Waals type equation of state. Using this formulation we have calculated several relative hadronic yields as well as nucleon (antinucleon) densities in the system. This approach is thermodynamically consistent. It is found that the particle ratios get significantly modified in the case of van der Waals interactions for a baryon rich system. In this approach the repulsive force is assumed to exist between pairs of two baryons and pairs of two antibaryons, while it is purely attractive between a baryon-antibaryon pair. The values of attractive and repulsive parameters have been obtained from the previous studies which are required to reproduce the ground state properties of nuclear matter. We have also studied the effect of the variation of these parameters on our results.
