Spinodal Instabilities in Asymmetric Nuclear Matter Based on Realistic $NN$ Interactions

Abstract

A density dependent relativistic mean-field model is determined to reproduce the components of the nucleon self-energy at low densities. This model is used to investigate spinodal instabilities in isospin asymmetric nuclear matter at finite temperatures. The inhomogeneous density distributions in the spinodal region are investigated through calculations in a cubic Wigner-Seitz cell. Compared to results obtained in phenomenological calculations the spinodal region is large, i.e. the spinodal region at zero temperature can reach densities above 0.12 fm${}^{-3}$. The predicted spinodal region is concentrated around isospin symmetric nuclear matter and the critical temperature is considerably lower than in the previous microscopic based investigation within a non-relativistic Brueckner-Hartree-Fock approach.

11 pages, 7 figures

References in corpus (8)

• Modern compact star observations and the quark matter equation of state
• Isospin-dependent clusterization of Neutron-Star Matter
• Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter based on improved approximation schemes
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Cited by in corpus (1)

• Thermal Properties of Asymmetric Nuclear Matter