Neutron stars within the Bogoliubov quark-meson coupling model
| Autor: | Steven A. Moszkowski, Constança Providência, Aziz Rabhi, Henrik Bohr, João da Providência |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Quark
Physics Particle physics Nuclear Theory Meson 010308 nuclear & particles physics High Energy Physics::Phenomenology Quark model FOS: Physical sciences Nuclear matter Coupling (probability) 01 natural sciences Nuclear Theory (nucl-th) Neutron star Stars 0103 physical sciences Saturation (graph theory) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics 010306 general physics Nuclear Experiment |
| Zdroj: | Rabhi, A, Providência, C, Moszkowski, S A, Da Providência, J & Bohr, H 2021, ' Neutron stars within the Bogoliubov quark-meson coupling model ', Physical Review C, vol. 103, no. 3, 035811 . https://doi.org/10.1103/PhysRevC.103.035811 |
| DOI: | 10.1103/PhysRevC.103.035811 |
| Popis: | A quark-meson coupling model based on the quark model proposed by Bogoliubov for the description of the quark dynamics is developed and applied to the description of neutron stars. Starting from a su(3) symmetry approach, it is shown that this symmetry has to be broken in order to satisfy the constraints set by the hypernuclei and by neutron stars. The model is able to describe observations such as two solar mass stars or the radius of canonical neutron stars within the uncertainties presently accepted. If the optical potentials for $\Lambda$ and $\Xi$ hyperons in symmetric nuclear matter at saturation obtained from laboratory measurements of hypernuclei properties are imposed the model predicts no strangeness inside neutron stars. Comment: 14 pages, 4 figures, 1 table, revised and re submitted for publication to Physical Review C journal |
| Databáze: | OpenAIRE |
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