Chiral three-nucleon forces and pairing in nuclei

Abstract

We present the first study of pairing in nuclei including three-nucleon forces. We perform systematic calculations of the odd-even mass staggering generated using a microscopic pairing interaction at first order in chiral low-momentum interactions. Significant repulsive contributions from the leading chiral three-nucleon forces are found. Two- and three-nucleon interactions combined account for approximately 70% of the experimental pairing gaps, which leaves room for self-energy and induced interaction effects that are expected to be overall attractive in nuclei.

4 pages, 3 figures

References in corpus (10)

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• Non-empirical pairing energy functional in nuclear matter and finite nuclei
• Non-empirical pairing functional
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• Pairing in exotic neutron rich nuclei around the drip line and in the crust of neutron stars
• Nuclear pairing from microscopic forces: singlet channels and higher-partial waves
• Role of three-nucleon forces and many-body processes in nuclear pairing
• Moving away from singly-magic nuclei with Gorkov Green's function theory
• Towards a Renormalization Group Approach to Density Functional Theory - General Formalism and Case Studies -
• Formation of Selfbound States in a One-Dimensional Nuclear Model -- A Renormalization Group based Density Functional Study
• The nuclear energy density functional formalism
• Density Functional Theory with Spatial-Symmetry Breaking and Configuration Mixing
• Renormalization group and Fermi liquid theory for many-nucleon systems
• Nuclear Pairing from Chiral Pion-Nucleon Dynamics: Applications to Finite Nuclei