Work

Constraining three-nucleon forces with multimessenger data

Year: 2021

Type: article

Abstract: We report the results of a study aimed at inferring direct information on the repulsive three-nucleon potential ${V}_{ijk}^{R}$---driving the stiffness of the nuclear matter equation of state at supranuclear densities---from astrophysical observations. Using a Bayesian approach, we exploit the measurements of masses, radii, and tidal deformabalities performed by the NICER satellite and the LIGO/Virgo Collaborations as well as the mass of the heaviest observed pulsar to constrain the strength of ${V}_{ijk}^{R}$. The baseline of our analysis is the widely employed nuclear Hamiltonian comprising the Argonne ${v}_{18}$ nucleon-nucleon potential and the Urbana IX model of the three-nucleon potential. The numerical results, largely determined by the bound on the maximum mass, suggest that existing and future facilities have the potential to provide valuable new insight into microscopic nuclear dynamics at supranuclear densities.

Source: Physical Review C

DOI: 10.1103/physrevc.103.065804

Authors: Andrea Maselli, Andrea Sabatucci, Omar Benhar

Institutions: Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, Gran Sasso Science Institute, Sapienza University of Rome, Istituto Nazionale di Fisica Nucleare, Sezione di Roma I

Language: English

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Ministero dell’Istruzione, dell’Università e della Ricerca, Instituto Nazionale di Fisica Nucleare, Amaldi Research Center

Awards: G2975180333, G3806112562, G3958355354, G8373880402