Analysis of critical parameters for nonrelativistic models of symmetric nuclear matter

In this work we have analyzed several features of symmetric nuclear matter (SNM) at finite temperature described by different zero- and finite-range nonrelativistic families of models, namely, Skyrme, Gogny, momentum-dependent interaction, Michigan three-range Yukawa, and simple effective interaction. We have calculated the critical parameters (CPs) associated to the liquid-gas phase coexistence for nuclear matter from these parametrizations and show that they are in agreement with their experimental and theoretical values obtained in the literature. Our study also points to a strong evidence of universality presented by the hadronic models, namely, model independence in the gaseous phase and distinguishability among different interactions in the liquid phase. We have performed a correlation study among different CPs and SNM properties. Such studies involving different finite-range interactions are scarce in literature. The analyzed models show an overall increasing trend of the critical temperature as a function of critical pressure.

Automated summary

This study analyzed features of symmetric nuclear matter at finite temperature using different nonrelativistic models. The calculated critical parameters were in agreement with experimental values, showing model independence and distinguishability among interactions. The models showed an increasing trend of critical temperature with critical pressure.