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Título: | Covariant renormalizable gravity and its FRW cosmology |
Autor: | Nojiri, Shin'ichi; Odintsov, Sergei D. CSIC ORCID | Fecha de publicación: | 15-feb-2010 | Editor: | American Physical Society | Citación: | Physical Review - Section D - Particles and Fields 81 (4) : 043001 (2010) | Resumen: | We consider the diffeomorphism invariant gravity coupled with the ideal fluid in the non-standard way. The Lorentz-invariance of the graviton propagator in such a theory considered as perturbation over flat background turns out to be broken due to non-standard coupling with the ideal fluid. As a result the behavior of the propagator in the ultraviolet/infrared region indicates that some versions of such theory are (super-)renormalizable ones (with appearance of only physical transverse modes). The FRW cosmology in same cases may be different from the one in General Relativity with the possible quintessence/phantom-like inflationary stage. | Descripción: | Publicado en línea el 1 de febrero de 2010. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.81.043001 | URI: | http://hdl.handle.net/10261/38126 | DOI: | 10.1103/PhysRevD.81.043001 | ISSN: | 0556-2821 | E-ISSN: | 1089-4918 |
Aparece en las colecciones: | (ICE) Artículos |
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