Work

Revised analysis of the strengths of the contact potential at N4LO through nuclear and neutron matter

Year: 2026

Type: preprint

Abstract: We examine the contact three-nucleon force at N4LO expressed as a density dependent potential. In Ref. [1], the necessary couplings (13, including two that appear in the leading three-nucleon force), were extracted from nd scattering observables. The contact strengths obtained through the three-nucleon continuum, without ?ts to the triton, seem incompatible with the energy of nuclear and neutron matter. We take the opportunity to revisit the role of the cD, cE couplings of the leading three-nucleon force in nuclear matter and nuclei. We close with a discussion about recent ?ttings of three-nucleon scattering observables using a spectroscopic basis for the subleading contact three-nucleon force. Using the errors given for the couplings in the spectroscopic basis, we derive uncertainty bands for the strengths in the operator basis and their contributions to the leading and subleading three-nucleon contact interactions.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2608.06610

Authors: Sammarruca, Francesca, Ajagbonna, Tomiwa

Institution: University of Idaho

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Office of Science, Basic Energy Sciences

Awards: G222768804, G3941675156, MICROSCOPIC STUDIES WITH ASYMMETRIC NUCLEAR MATTER AND ASYMMETRIC NUCLEI, G5648016710, MICROSCOPIC STUDIES WITH ASYMMETRIC NUCLEAR MATTER AND ASYMMETRIC NUCLEI

OpenAlex ID: W7202148731

Cites: 10

Cited by:

Related to: 10