Abstract
We study the importance of few-nucleon forces in chiral effective field theory for describing many-nucleon systems. A combinatorial argument suggests that three-nucleon forces-which are conventionally regarded as next-to-next-to-leading order-should accompany the two-nucleon force already at leading order (LO) starting with mass number A≃ 10–20. We find that this promotion enables the first realistic description of the 16 O ground state based on a renormalization-group-invariant LO interaction. We also performed coupled-cluster calculations of the equation of state for symmetric nuclear matter and our results indicate that LO four-nucleon forces could play a crucial role for describing heavy-mass nuclei. The enhancement mechanism we found is very general and could be important also in other many-body problems.
| Original language | English |
|---|---|
| Article number | 233 |
| Journal | European Physical Journal A |
| Volume | 59 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2023 |
Funding
We thank H. Grie\u00DFhammer, D. Lee, T. Papenbrock and R. Stroberg for useful discussions. This work was supported in part by the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme (Grant agreement No. 758027); the Swedish Research Council (Grant No. 2017-04234); the Czech Science Foundation GACR grant 19-19640\u00A0S and 22-14497\u00A0S; the Extreme Light Infrastructure Nuclear Physics (ELI-NP) Phase II, a project co-financed by the Romanian Government and the European Union through the European Regional Development Fund - the Competitiveness Operational Programme (1/07.07.2016, COP, ID 1334); the Romanian Ministry of Research and Innovation: PN23210105 (Phase 2, the Program Nucleu); the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under award numbers DE-FG02-04ER41338, desc0018223 (NUCLEI SciDAC-4 collaboration), the Field Work Proposal ERKBP72 at Oak Ridge National Laboratory (ORNL); and the U.S. National Science Foundation grants PHY-1913620, PHY-2209184. The computations were enabled by resources provided by the project \u201CeInfrastruktura CZ\u201D (e-INFRA CZ LM2018140) supported by the Ministry of Education, Youth and Sports of the Czech Republic, IT4Innovations at Czech National Supercomputing Center under project number OPEN24-21 1892, the Swedish National Infrastructure for Computing (SNIC) at C3SE and Tetralith partially funded by the Swedish Research Council, and CINECA under PRACE EHPCBEN-2023B05-023. We thank H. Grie\u00DFhammer, D. Lee, T. Papenbrock and R. Stroberg for useful discussions. This work was supported in part by the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme (Grant agreement No. 758027); the Swedish Research Council (Grant No. 2017-04234); the Czech Science Foundation GACR grant 19-19640 S and 22-14497 S; the Extreme Light Infrastructure Nuclear Physics (ELI-NP) Phase II, a project co-financed by the Romanian Government and the European Union through the European Regional Development Fund - the Competitiveness Operational Programme (1/07.07.2016, COP, ID 1334); the Romanian Ministry of Research and Innovation: PN23210105 (Phase 2, the Program Nucleu); the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under award numbers DE-FG02-04ER41338, desc0018223 (NUCLEI SciDAC-4 collaboration), the Field Work Proposal ERKBP72 at Oak Ridge National Laboratory (ORNL); and the U.S. National Science Foundation grants PHY-1913620, PHY-2209184. The computations were enabled by resources provided by the project \u201CeInfrastruktura CZ\u201D (e-INFRA CZ LM2018140) supported by the Ministry of Education, Youth and Sports of the Czech Republic, IT4Innovations at Czech National Supercomputing Center under project number OPEN24-21 1892, the Swedish National Infrastructure for Computing (SNIC) at C3SE and Tetralith partially funded by the Swedish Research Council, and CINECA under PRACE EHPCBEN-2023B05-023.