Liquid-Gas Phase Transition in Nuclear Matter Within Relativistic Mean Field Theory

Abstract

The Relativistic Mean Field Theory is used to calculate the equation of state for the symmetric and asymmetric nuclear matter at zero and nite temperature limit using the recently developed force parameters such as FSUGarnet, IOPB-I and G3 along with the widely used NL3 set. The versatility of these parameters set is investigated for a broad range of baryon density. Nuclear matter properties at zero temperature are investigated, and the results are compared with the one available in the literature. It is observed that these parameter sets are in excellent agreement with the available experimental data for both nite and in nite nuclear matter. This fact is then exploited to estimate the equation of state at nite temperature. For the rst time, FSUGarnet, IOPB-I and G3 parameter sets are used here to investigate the liquid-gas phase transition in symmetric as well as asymmetric nuclear matter. The results obtained for the critical parameters are compared with the theoretical models, and recently published experimental data obtained from two compound nuclear and four multi-fragment processes. In our calculations, the critical temperature for the symmetric nuclear matter lies in the range of (13.6 - 14.3) MeV with the corresponding critical pressure Pc and critical density c in the range (0.16 - 0.19) MeV fm 􀀀3 and (0.048 - 0.062) fm􀀀3 respectively. The e ect of scalar meson and vector meson in the context of nite temperature equation of state is also investigated.