The Density-Dependent Correlations among Observables in Nuclear Matter and Hyperon-Rich Neutron Stars

Figure 8

Nucleon symmetry energies of (𝑛,𝑝,𝑒), (𝑛,𝑝,Σ⁻,𝑒), and (𝑛,𝑝,Λ,𝑒) are shown with the solid, doted, and dot-dashed lines, respectively. The ratios of hyperon coupling constants are 𝑟^𝜎_Σ⁻_𝑁=1.0 and 𝑟^𝜎_Λ𝑁=1.0. The discontinuity of symmetry energy, (𝑛,𝑝,Σ⁻,𝑒), occurs at 𝜌_𝐵/𝜌₀∼3.641, because of the phase transition from (𝑛,𝑝,Σ⁻,𝑒) to (𝑛,𝑝,Σ⁻).