6533b86ffe1ef96bd12ce8bb
RESEARCH PRODUCT
Parameterized nonrelativistic limit of stellar structure equations in Ricci-based gravity theories
Diego Rubiera-garciaAneta WojnarGonzalo J. Olmosubject
PhysicsFísica-Modelos matemáticosFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum CosmologyConnection (mathematics)StarsMetric (mathematics)Astrophysics::Solar and Stellar AstrophysicsFísica matemáticaStellar structureLimit (mathematics)TensorAstrophysics::Earth and Planetary AstrophysicsPhenomenology (particle physics)Ricci curvatureMathematical physicsdescription
We present the non-relativistic limit of the stellar structure equations of Ricci-based gravities, a family of metric-affine theories whose Lagrangian is built via contractions of the metric with the Ricci tensor of an a priori independent connection. We find that this limit is characterized by four parameters that arise in the expansion of several geometric quantities in powers of the stress-energy tensor of the matter fields. We discuss the relevance of this result for the phenomenology of non-relativistic stars, such as main-sequence stars as well as several substellar objects.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-07-16 |