| Irfu-11-61
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| Chiral three-nucleon forces and pairing in nuclei |
| T. Lesinski, K. Hebeler, T. Duguet, A. Schwenk |
| 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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