Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity
Abstract We study three aspects of the early-evolutionary phases in low-mass stars within Eddington-inspired Born–Infeld (EiBI) gravity, a viable extension of General Relativity. These aspects are concerned with the Hayashi tracks (i.e. the effective temperature-luminosity relation); the minimum mas...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10624-2 |
| _version_ | 1828437895511277568 |
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| author | Merce Guerrero Diego Rubiera-Garcia Aneta Wojnar |
| author_facet | Merce Guerrero Diego Rubiera-Garcia Aneta Wojnar |
| author_sort | Merce Guerrero |
| collection | DOAJ |
| description | Abstract We study three aspects of the early-evolutionary phases in low-mass stars within Eddington-inspired Born–Infeld (EiBI) gravity, a viable extension of General Relativity. These aspects are concerned with the Hayashi tracks (i.e. the effective temperature-luminosity relation); the minimum mass required to belong to the main sequence; and the maximum mass allowed for a fully convective star within the main sequence. Using analytical models accounting for the most relevant physics of these processes, we find in all cases a dependence of these quantities not only on the theory’s parameter, but also on the star’s central density, a feature previously found in Palatini f(R) gravity. Using this, we investigate the evolution of these quantities with the (sign of the) EiBI parameter, finding a shift in the Hayashi tracks in opposite directions in the positive/negative branches of it, and an increase (decrease) for positive (negative) parameter in the two masses above. We use these results to elaborate on the chances to seek for traces of new physics in low-mass stars within this theory, and the limitations and difficulties faced by this approach. |
| first_indexed | 2024-12-10T19:53:58Z |
| format | Article |
| id | doaj.art-56cc0d4fd8684759ae160ea21ca28bf8 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-12-10T19:53:58Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-56cc0d4fd8684759ae160ea21ca28bf82022-12-22T01:35:42ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-08-0182811210.1140/epjc/s10052-022-10624-2Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravityMerce Guerrero0Diego Rubiera-Garcia1Aneta Wojnar2Departamento de Física Teórica and IPARCOS, Universidad Complutense de MadridDepartamento de Física Teórica and IPARCOS, Universidad Complutense de MadridLaboratory of Theoretical Physics, Institute of Physics, University of TartuAbstract We study three aspects of the early-evolutionary phases in low-mass stars within Eddington-inspired Born–Infeld (EiBI) gravity, a viable extension of General Relativity. These aspects are concerned with the Hayashi tracks (i.e. the effective temperature-luminosity relation); the minimum mass required to belong to the main sequence; and the maximum mass allowed for a fully convective star within the main sequence. Using analytical models accounting for the most relevant physics of these processes, we find in all cases a dependence of these quantities not only on the theory’s parameter, but also on the star’s central density, a feature previously found in Palatini f(R) gravity. Using this, we investigate the evolution of these quantities with the (sign of the) EiBI parameter, finding a shift in the Hayashi tracks in opposite directions in the positive/negative branches of it, and an increase (decrease) for positive (negative) parameter in the two masses above. We use these results to elaborate on the chances to seek for traces of new physics in low-mass stars within this theory, and the limitations and difficulties faced by this approach.https://doi.org/10.1140/epjc/s10052-022-10624-2 |
| spellingShingle | Merce Guerrero Diego Rubiera-Garcia Aneta Wojnar Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity European Physical Journal C: Particles and Fields |
| title | Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity |
| title_full | Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity |
| title_fullStr | Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity |
| title_full_unstemmed | Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity |
| title_short | Pre-main sequence evolution of low-mass stars in Eddington-inspired Born–Infeld gravity |
| title_sort | pre main sequence evolution of low mass stars in eddington inspired born infeld gravity |
| url | https://doi.org/10.1140/epjc/s10052-022-10624-2 |
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