2026-06-08T02:38:38Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/60632023-08-25T13:13:02Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Afonso, Victor I.
author
Olmo, Gonzalo J.
author
Orazi, Emanuele
author
Rubiera García, Diego
2023-06-16T15:16:02Z
2023-06-16T15:16:02Z
2019-12
1475-7516
10.1088/1475-7516/2019/12/044
https://hdl.handle.net/20.500.14352/6063
http://dx.doi.org/10.1088/1475-7516/2019/12/044
https://iopscience.iop.org/
Taking advantage of a previously developed method, which allows to map solutions of General Relativity into a broad family of theories of gravity based on the Ricci tensor (Ricci-based gravities), we find new exact analytical scalar field solutions by mapping the free-field static, spherically symmetric solution of General Relativity (GR) into quadratic f(R) gravity and the Eddington-inspired Born-Infeld gravity. The obtained solutions have some distinctive feature below the would-be Schwarzschild radius of a configuration with the same mass, though in this case no horizon is present. The compact objects found include wormholes, compact balls, shells of energy with no interior, and a new kind of object which acts as a kind of wormhole membrane. The latter object has Euclidean topology but connects antipodal points of its surface by transferring particles and null rays across its interior in virtually zero affine time. We point out the relevance of these results regarding the existence of compact scalar field objects beyond General Relativity that may effectively act as black hole mimickers.
eng
New scalar compact objects in Ricci-based gravity theories
journal article
URL
https://docta.ucm.es/bitstreams/6c4cb7b4-daa5-4aa9-8c64-2d9290d8ae33/download
File
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application/pdf
Rubiera, D 04 Preprint.pdf
URL
https://docta.ucm.es/bitstreams/1ea119d7-b7a8-47dd-82d2-ecbed69c399b/download
File
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text/plain
Rubiera, D 04 Preprint.pdf.txt