Anatomy of symmetry energy of dilute nuclear matter

TL;DR

This paper evaluates the symmetry energy coefficients of dilute, clusterized nuclear matter using the S-matrix framework, revealing differences from uniform matter and aligning with recent experimental data.

Contribution

It introduces a detailed analysis of symmetry energy coefficients in dilute nuclear matter using the S-matrix approach, highlighting the impact of different definitions.

Findings

Symmetry coefficients are higher in dilute matter than in uniform matter at low densities.

Different definitions of symmetry energy lead to perceptible variations in results.

Calculated coefficients are consistent with recent experimental data.

Abstract

The symmetry energy coefficients of dilute clusterized nuclear matter are evaluated in the $S$-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.