Spin- and isospin-polarized states of nuclear matter in the Dirac-Brueckner-Hartree-Fock model

TL;DR

This paper investigates spin- and isospin-polarized nuclear matter using the Dirac-Brueckner-Hartree-Fock model, finding no evidence of phase transitions to spin-ordered states under various conditions.

Contribution

It provides a detailed analysis of spin and isospin polarization effects in nuclear matter within the DBHF framework, including self-consistent potentials and energy predictions.

Findings

No phase transition to spin-ordered states detected.

Self-consistent single-particle potentials characterized.

Energy per particle analyzed under various polarization conditions.

Abstract

Spin-polarized isospin asymmetric nuclear matter is studied within the Dirac-Brueckner-Hartree-Fock approach. After a brief review of the formalism, we present and discuss the self-consistent single-particle potentials at various levels of spin and isospin asymmetry. We then move to predictions of the energy per particle, also under different conditions of isospin and spin polarization. Comparison with the energy per particle in isospin symmetric or asymmetric unpolarized nuclear matter shows no evidence for a phase transition to a spin ordered state, neither ferromagnetic nor antiferromagnetic.