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Título: | Nonlinear σ -models in the Eddington-inspired Born-Infeld gravity |
Autor: | Nascimento, J.R.; Olmo, Gonzalo J. CSIC ORCID; Porfírio, P.J.; Petrov, A.Y.; Soares, A.R. | Fecha de publicación: | mar-2020 | Citación: | Physical Review D 101 (6): 064043 (2020) | Resumen: | In this paper we consider two different nonlinear σ-models minimally coupled to Eddington-inspired Born-Infeld gravity. We show that the resultant geometries represent minimal modifications with respect to those found in GR, though with important physical consequences. In particular, wormhole structures always arise, though this does not guarantee by itself the geodesic completeness of those space-times. In one of the models, quadratic in the canonical kinetic term, we identify a subset of solutions which are regular everywhere and are geodesically complete. We discuss characteristic features of these solutions and their dependence on the relationship between mass and global charge. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.101.064043 | URI: | http://hdl.handle.net/10261/216059 | DOI: | 10.1103/PhysRevD.101.064043 | Identificadores: | doi: 10.1103/PhysRevD.101.064043 issn: 2470-0029 |
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