Chiral three-nucleon forces and pairing in nuclei

Details Chiral three-nucleon forces and pairing in nuclei Chiral three-nucleon forces and pairing in nuclei

2011-04-15

arxiv.org/abs/1104.2955v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures

Scientific paper

10.1088/0954-3899/39/1/015108

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.

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