Nuclear Pairing from Chiral Pion-Nucleon Dynamics: Applications to Finite Nuclei

TL;DR

This paper investigates nuclear pairing gaps in symmetric nuclear matter and finite nuclei using chiral nucleon-nucleon potentials, introducing a separable pairing force for realistic RHB calculations and analyzing various isotopic chains.

Contribution

It introduces a separable pairing interaction adjusted to chiral forces for use in RHB calculations of finite nuclei.

Findings

Successful application of the separable pairing force to isotopic chains.

Consistent description of pairing gaps with chiral nucleon-nucleon interactions.

Enhanced understanding of nuclear pairing from chiral effective field theory.

Abstract

The 1S0 pairing gap in isospin-symmetric nuclear matter and finite nuclei is investigated using the chiral nucleon-nucleon potential at the N3LO order in the two-body sector, and the N2LO order in the three-body sector. To include realistic nuclear forces in RHB (Relativistic Hartree Bolgoliubov) calculations we rely on a separable form of the pairing interaction adjusted to the bare nuclear force. The separable pairing force is applied to the analysis of pairing properties for several isotopic and isotonic chains of spherical nuclei.