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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.12328 |
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| _version_ | 1866911779744907264 |
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| author | Valdez-Alvarado, Susana Cruz-Osorio, Alejandro Dávila, J. M. Ureña-López, L. Arturo Becerril, Ricardo |
| author_facet | Valdez-Alvarado, Susana Cruz-Osorio, Alejandro Dávila, J. M. Ureña-López, L. Arturo Becerril, Ricardo |
| contents | We investigated the possibility that compact stars could be described by a fermion-boson star with a quartic self-interaction in the boson sector. Specifically, by varying the polytropic constant $K$ and adiabatic index $Γ$ in the polytropic equation of state, the boson mass $μ$, and the self-interaction parameter $Λ$, we construct equilibrium configurations of these mixed-stars with total mass compatible with the mass constraints obtained from observational data of the collaborations NICE, NICER/XMN-Newton, and LIGO. Our work confirms that the addition of a boson sector eases the comparison of neutron star models with gravitational events related to compact objects and that in such a case observations may have preference for a positive self-interaction in the boson sector. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12328 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observations of compact stars and fermion-boson stars with a quartic self-interaction Valdez-Alvarado, Susana Cruz-Osorio, Alejandro Dávila, J. M. Ureña-López, L. Arturo Becerril, Ricardo General Relativity and Quantum Cosmology We investigated the possibility that compact stars could be described by a fermion-boson star with a quartic self-interaction in the boson sector. Specifically, by varying the polytropic constant $K$ and adiabatic index $Γ$ in the polytropic equation of state, the boson mass $μ$, and the self-interaction parameter $Λ$, we construct equilibrium configurations of these mixed-stars with total mass compatible with the mass constraints obtained from observational data of the collaborations NICE, NICER/XMN-Newton, and LIGO. Our work confirms that the addition of a boson sector eases the comparison of neutron star models with gravitational events related to compact objects and that in such a case observations may have preference for a positive self-interaction in the boson sector. |
| title | Observations of compact stars and fermion-boson stars with a quartic self-interaction |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2402.12328 |