Structure of compact stars in Palatini f (R) gravity
The study of the structure of compact objects in modified theories of gravity can be useful to constrain f (R)-theories in the strong gravitational regime. In particular, the structure of compact stars in the theory with Langrangian density f (R) = R + αR2 have been recently explored using the metri...
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| Autores principales: | , , , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/165283 |
| Aporte de: |
| Sumario: | The study of the structure of compact objects in modified theories of gravity can be useful to constrain f (R)-theories in the strong gravitational regime. In particular, the structure of compact stars in the theory with Langrangian density f (R) = R + αR2 have been recently explored using the metric formalism.
In this work we analyze configurations of neutron stars in squared-gravity using the Palatini formalism, in which the field equations are of second order, and the modified Tolman-Oppenheimer-Volkoff equations for a sphericallysymmetric and static metric can be derived without approximation, as in General Relativity.
The numerical integration of the structure equations allows us to study the mass-radius configurations and the characteristics of internal profiles.
We compare our results with those obtained using General Relativity. |
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