Rapidly Spinning Massive Pulsars as an Indicator of Quark Deconfinement
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912772400349184 |
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| author | Gärtlein, Christoph Sagun, Violetta Ivanytskyi, Oleksii Blaschke, David Lopes, Ilídio |
| author_facet | Gärtlein, Christoph Sagun, Violetta Ivanytskyi, Oleksii Blaschke, David Lopes, Ilídio |
| contents | We study rotating hybrid stars, with particular emphasis on the effect of spin on the deconfinement phase transition and star properties. Our analysis is based on a hybrid equation of state with a phase transition from hadronic matter containing hyperons to color-superconducting quark matter, where the quark phase is modeled within a relativistic density functional approach. By varying the strength of the vector repulsion and diquark pairing couplings in the microscopic quark Lagrangian, we construct a set of hybrid star sequences with different quark-matter onset densities. This framework ensures consistency with astrophysical and gravitational wave constraints on mass, radius, and tidal deformability. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_07977 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rapidly Spinning Massive Pulsars as an Indicator of Quark Deconfinement Gärtlein, Christoph Sagun, Violetta Ivanytskyi, Oleksii Blaschke, David Lopes, Ilídio Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology We study rotating hybrid stars, with particular emphasis on the effect of spin on the deconfinement phase transition and star properties. Our analysis is based on a hybrid equation of state with a phase transition from hadronic matter containing hyperons to color-superconducting quark matter, where the quark phase is modeled within a relativistic density functional approach. By varying the strength of the vector repulsion and diquark pairing couplings in the microscopic quark Lagrangian, we construct a set of hybrid star sequences with different quark-matter onset densities. This framework ensures consistency with astrophysical and gravitational wave constraints on mass, radius, and tidal deformability. |
| title | Rapidly Spinning Massive Pulsars as an Indicator of Quark Deconfinement |
| topic | Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2512.07977 |