期刊
PHYSICAL REVIEW D
卷 104, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.024045
关键词
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资金
- Atraccion de Talento Investigador programme of the Comunidad de Madrid (Spain) [2018-T1/TIC-10431]
- Ministerio de Ciencia, Innovacion y Universidades (Spain) [PID2019-108485 GBI00]
- FCT [PTDC/FIS-PAR/31938/2017, PTDC/FISOUT/29048/2017]
- EU through the European Regional Development Fund CoE program TK133 The Dark Side of the Universe
- MINECO/FEDER, EU [FIS2017-84440-C21-P]
- Generalitat Valenciana [PROMETEO/2020/079]
- CSIC [i-COOPB20462]
- FAPESQ-PB/CNPQ, Brazil [0015/2019, 006/2018 PRONEX]
- COST (European Cooperation in Science and Technology) [CA18108]
This study presents the nonrelativistic limit of the stellar structure equations of Ricci-based gravities, characterized by four parameters, and discusses its relevance for the phenomenology of nonrelativistic stars.
We present the nonrelativistic 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 nonrelativistic stars, such as main-sequence stars as well as several substellar objects.
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