Exact solution of the Brueckner-Bethe-Goldstone equation with three-body forces in nuclear matter

Abstract

An exact treatment of the operators Q/e(ω) and the total momentum is adopted to solve the nuclear matter Bruecker-Bethe-Goldstone equation with two- and three-body forces. The single-particle potential, equation of state and nucleon effective mass are calculated from the exact G-matrix. The results are compared with those obtained under the angle-average approximation and the angle-average approximation with total momentum approximation. It is found that the angle-average procedure, whereas preventing huge calculations of coupled channels, nevertheless provides a fairly accurate approximation. On the contrary, the total momentum approximation turns out to be quite inaccurate compared to its exact counterpart.

References in corpus (4)

• Improved nuclear matter calculations from chiral low-momentum interactions
• Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
• Hot neutron matter from a Self-Consistent Green's Functions approach
• The entropy of a correlated system of nucleons

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• Properties of hyperons in nuclear matter from chiral hyperon-nucleon interactions at next-to-next-to-leading order
• In-medium effects of nucleon-nucleon cross sections in heavy-ion collisions