https://doi.org/10.1140/epja/s10050-022-00669-y
Regular Article - Theoretical Physics
An analytic parametrization of the hypernuclear matter equation of state
1
Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
2
Faculty of Natural Sciences and Mathematics-Skopje, Ss. Cyril and Methodius University in Skopje, Arhimedova, 1000, Skopje, North Macedonia
3
Istituto Nazionale di Fisica Nucleare, Sezione di Catania. Dipartimento di Fisica “Ettore Majorana”, Università di Catania, Via Santa Sofia 64, 95123, Catania, Italy
Received:
2
November
2021
Accepted:
13
January
2022
Published online:
18
February
2022
An analytic parametrization of the cold hypernuclear matter equation of state based on microscopic Brueckner–Hartree–Fock calculations is constructed using realistic nucleon-nucleon and hyperon-nucleon interactions. The parametrization is based on a simple phase-space analysis and reproduces with good accuracy the results of the microscopic calculations with a small number of parameters. This parametrization allows for rapid calculations that accurately mimic the microscopic results, being therefore very useful from a practical point of view. As an example, we determine the composition and some properties of neutron stars, such as mass-radius relation, tidal deformability and moment of inertia, using the equation of state derived from this parametrization.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
