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arXiv · 2105.00904

Parameterized non-relativistic limit of stellar structure equations in Ricci-based gravity theories

Gonzalo J. Olmo·Diego Rubiera-Garcia·Aneta Wojnar
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Abstract

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.

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Gonzalo J. Olmo, Diego Rubiera-Garcia, Aneta Wojnar. 2021-05-03. Parameterized non-relativistic limit of stellar structure equations in Ricci-based gravity theories. https://doi.org/10.1103/physrevd.104.024045

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