Spin-orbit correlation energy in neutron matter

Abstract

We study the relevance of the energy correlation produced by the two-body spin-orbit coupling present in realistic nucleon-nucleon potentials. To this purpose, the neutron matter Equation of State (EoS) is calculated with the realistic two-body Argonne $v_8^{\prime }$ potential. The shift occuring in the EoS when spin-orbit terms are removed is taken as an estimate of the spin-orbit correlation energy. Results obtained within the Bethe-Brueckner-Goldstone expansion, extended up to three hole-line diagrams, are compared with other many-body calculations recently presented in the literature. In particular, excellent agreement is found with the Green's function Monte-Carlo method. This agreement indicates the present theoretical accuracy in the calculation of the neutron matter EoS.

5 pages, 2 figures, 2 tables; to appear in Phys. Rev. C

References in corpus (3)

• Quantum Monte Carlo Calculations of Neutron Matter
• Neutron matter at zero temperature with auxiliary field diffusion Monte Carlo
• Spin-orbit induced backflow in neutron matter with auxiliary field diffusion Monte Carlo

Cited by in corpus (8)

• Equations of state for supernovae and compact stars
• Quantum Monte Carlo calculation of the equation of state of neutron matter
• Comparative study of neutron and nuclear matter with simplified Argonne nucleon-nucleon potentials
• Benchmark calculations of pure neutron matter with realistic nucleon-nucleon interactions
• Auxiliary Field Diffusion Monte Carlo calculation of ground state properties of neutron drops
• Effects of $\varphi$-meson on properties of hyperon stars in density dependent relativistic mean field model
• Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories
• The Auxiliary Field Diffusion Monte Carlo Method for Nuclear Physics and Nuclear Astrophysics