Influence of spin polarizability on liquid gas phase transition in the nuclear matter

TL;DR

This study explores how spin polarization affects the liquid-gas phase transition in nuclear matter, revealing that polarization lowers the critical temperature and aligns well with experimental data.

Contribution

It introduces a detailed analysis of spin polarized nuclear matter's phase transition using LOCV with microscopic potentials, highlighting the impact of spin polarization.

Findings

Spin polarization lowers the critical temperature of the phase transition.

The critical temperature for polarized nuclear matter matches experimental results.

A second order phase transition occurs at lower temperatures in polarized matter.

Abstract

In this paper, we investigate the liquid gas phase transition for the spin polarized nuclear matter. Applying the lowest order constrained variational (LOCV) method, and using two microscopic potentials, $AV_{18}$ and $UV_{14}$+TNI, we calculate the free energy, equation of state, order parameter, entropy, heat capacity and compressibility to derive the critical properties of spin polarized nuclear matter. Our results indicate that for the spin polarized nuclear matter, the second order phase transition takes place at lower temperatures with respect to the unpolarized one. It is also shown that the critical temperature of our spin polarized nuclear matter with a specific value of spin polarization parameter is in good agreement with the experimental result.