Neutron stars in the Witten-Sakai-Sugimoto model
Abstract We utilize the top-down holographic QCD model, the Witten-Sakai-Sugimoto model, in a hybrid setting with the SLy4, soft chiral EFT and stiff chiral EFT equations of state to describe neutron stars with high precision. In particular, we employ a calibration that bootstraps the nuclear matter...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2023)209 |
| _version_ | 1797199784679833600 |
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| author | Lorenzo Bartolini Sven Bjarke Gudnason |
| author_facet | Lorenzo Bartolini Sven Bjarke Gudnason |
| author_sort | Lorenzo Bartolini |
| collection | DOAJ |
| description | Abstract We utilize the top-down holographic QCD model, the Witten-Sakai-Sugimoto model, in a hybrid setting with the SLy4, soft chiral EFT and stiff chiral EFT equations of state to describe neutron stars with high precision. In particular, we employ a calibration that bootstraps the nuclear matter by fitting the Kaluza-Klein scale and the ’t Hooft coupling such that the physical saturation density and physical symmetry energy are achieved. We obtain static stable neutron star mass-radius data via the Tolman-Oppenheimer-Volkov equations that yield sufficiently large maximal masses of neutron stars to be compatible with the recently observed PSR-J0952-0607 data as well as all other known radius and tidal deformation constraints. |
| first_indexed | 2024-03-09T06:02:35Z |
| format | Article |
| id | doaj.art-b59d70aad70545ad9665cbcb73598c32 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-24T07:21:16Z |
| publishDate | 2023-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-b59d70aad70545ad9665cbcb73598c322024-04-21T11:04:56ZengSpringerOpenJournal of High Energy Physics1029-84792023-11-0120231112210.1007/JHEP11(2023)209Neutron stars in the Witten-Sakai-Sugimoto modelLorenzo Bartolini0Sven Bjarke Gudnason1Institute of Contemporary Mathematics, School of Mathematics and Statistics, Henan UniversityInstitute of Contemporary Mathematics, School of Mathematics and Statistics, Henan UniversityAbstract We utilize the top-down holographic QCD model, the Witten-Sakai-Sugimoto model, in a hybrid setting with the SLy4, soft chiral EFT and stiff chiral EFT equations of state to describe neutron stars with high precision. In particular, we employ a calibration that bootstraps the nuclear matter by fitting the Kaluza-Klein scale and the ’t Hooft coupling such that the physical saturation density and physical symmetry energy are achieved. We obtain static stable neutron star mass-radius data via the Tolman-Oppenheimer-Volkov equations that yield sufficiently large maximal masses of neutron stars to be compatible with the recently observed PSR-J0952-0607 data as well as all other known radius and tidal deformation constraints.https://doi.org/10.1007/JHEP11(2023)209Effective Field Theories of QCDFinite Temperature or Finite DensityGauge-Gravity CorrespondencePhase Diagram or Equation of State |
| spellingShingle | Lorenzo Bartolini Sven Bjarke Gudnason Neutron stars in the Witten-Sakai-Sugimoto model Journal of High Energy Physics Effective Field Theories of QCD Finite Temperature or Finite Density Gauge-Gravity Correspondence Phase Diagram or Equation of State |
| title | Neutron stars in the Witten-Sakai-Sugimoto model |
| title_full | Neutron stars in the Witten-Sakai-Sugimoto model |
| title_fullStr | Neutron stars in the Witten-Sakai-Sugimoto model |
| title_full_unstemmed | Neutron stars in the Witten-Sakai-Sugimoto model |
| title_short | Neutron stars in the Witten-Sakai-Sugimoto model |
| title_sort | neutron stars in the witten sakai sugimoto model |
| topic | Effective Field Theories of QCD Finite Temperature or Finite Density Gauge-Gravity Correspondence Phase Diagram or Equation of State |
| url | https://doi.org/10.1007/JHEP11(2023)209 |
| work_keys_str_mv | AT lorenzobartolini neutronstarsinthewittensakaisugimotomodel AT svenbjarkegudnason neutronstarsinthewittensakaisugimotomodel |