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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2310.17719 |
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| _version_ | 1866914710279946240 |
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| author | Aleixo, M. Lenzi, C. H. de Paula, W. da Rocha, R. |
| author_facet | Aleixo, M. Lenzi, C. H. de Paula, W. da Rocha, R. |
| contents | This work investigates static and dynamical quark star properties within a $D_3-D_7$ holographic model. We solve the Tolman-Oppenheimer-Volkoff equations for the quark matter equation of state obtained from the brane configuration. We determine the mass-radius diagram for a range of model parameters and compare with recent NICER observational data for the pulsars PSR J$0030+0451$ and PSR J$0740+6620$. Motivated by the GW170817 event detected by the LIGO-Virgo collaboration, we also calculate the tidal deformability parameter obtained for each component of the binary star system. We show that quark stars composed of flavor-independent quark matter derived from the $D_3-D_7$ holographic model are not able to satisfy simultaneously the LIGO-Virgo and NICER astrophysical bounds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_17719 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quark stars in $D_3$-$D_7$ holographic model Aleixo, M. Lenzi, C. H. de Paula, W. da Rocha, R. High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory This work investigates static and dynamical quark star properties within a $D_3-D_7$ holographic model. We solve the Tolman-Oppenheimer-Volkoff equations for the quark matter equation of state obtained from the brane configuration. We determine the mass-radius diagram for a range of model parameters and compare with recent NICER observational data for the pulsars PSR J$0030+0451$ and PSR J$0740+6620$. Motivated by the GW170817 event detected by the LIGO-Virgo collaboration, we also calculate the tidal deformability parameter obtained for each component of the binary star system. We show that quark stars composed of flavor-independent quark matter derived from the $D_3-D_7$ holographic model are not able to satisfy simultaneously the LIGO-Virgo and NICER astrophysical bounds. |
| title | Quark stars in $D_3$-$D_7$ holographic model |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2310.17719 |