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| Título: | A comment on the matter-graviton coupling |
Autor: | Álvarez-Vázquez, Enrique CSIC ORCID; Fernández Faedo, Antón | Palabras clave: | High Energy Physics - Theory | Fecha de publicación: | 30-oct-2007 | Citación: | arXiv:0707.4221v5 [hep-th] | Serie: | IFT-UAM/CSIC-07-32 | Resumen: | We point out a generic inconsistency of the coupling of ordinary gravity as described by general relativity with matter invariant under the subgroup of unimodular diffeomorphisms (TDiffs), and some previously studied exceptions are pointed out. The most general Lagrangian invariant under TDiff up to dimension five operators is determined, and restrictions on parameters coming from existing observations are studied in some cases. | Descripción: | Submitted on 28 Jul 2007 (v1), last revised 30 Oct 2007 (this version, v5).-- 17 pages, 4 figures. References added | URI: | http://hdl.handle.net/10261/5467 |
| Aparece en las colecciones: | (IFT) Artículos |
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| 0707.4221v5.pdf | 291,77 kB | Adobe PDF |  Visualizar/Abrir |
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