Geometrical thick branes in 5D Weyl gravity
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Mexicana de Física A.C.
2007
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| author | N. Barbosa-Cendejas |
| author_facet | N. Barbosa-Cendejas |
| contents | Geometrical thick branes in 5D Weyl gravity N. Barbosa-Cendejas A. Herrera-Aguilar Física, Astronomía y Matemáticas thick branes 5D Weyl manifold Localization of 4D gravity In our proposal the Riemannian structure of the 5D space-time is replaced by aWeyl integrable one, which allows for variations in the lengthof vectors during parallel transport. The conformal technique is used to find a solution that respects 4D Poincar´e invariance. This solutionrepresents a set of thick branes that do not respect Z2 symmetry and generalises, in this way, the Randall-Sundrum solution. In our set-up thenon symmetric branes are constructed from the scalar field and we have no need of introducing them by hand as delta functions in the action(as in the Randall-Sundrum case). We examine the fluctuations of the metric around the background solution. The equation for the transversetraceless modes of the fluctuations that decouple from the scalar field supports a naturally massless and normalizable 4D graviton. Thus, ourmodel reproduces conventional 4D gravity. The spectrum of the Kaluza-Klein modes turns out to be continuous (as in the Randall-Sundrumcase). 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57066402 https://www.redalyc.org/journal/570/57066402/ https://www.redalyc.org/journal/570/57066402/html/ https://www.redalyc.org/journal/570/57066402/57066402.epub https://www.redalyc.org/journal/570/57066402/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.4 Vol.53 |
| format | Artículo científico |
| id | redalyc_57066402 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Geometrical thick branes in 5D Weyl gravity N. Barbosa-Cendejas Física, Astronomía y Matemáticas thick branes 5D Weyl manifold Localization of 4D gravity Geometrical thick branes in 5D Weyl gravity N. Barbosa-Cendejas A. Herrera-Aguilar Física, Astronomía y Matemáticas thick branes 5D Weyl manifold Localization of 4D gravity In our proposal the Riemannian structure of the 5D space-time is replaced by aWeyl integrable one, which allows for variations in the lengthof vectors during parallel transport. The conformal technique is used to find a solution that respects 4D Poincar´e invariance. This solutionrepresents a set of thick branes that do not respect Z2 symmetry and generalises, in this way, the Randall-Sundrum solution. In our set-up thenon symmetric branes are constructed from the scalar field and we have no need of introducing them by hand as delta functions in the action(as in the Randall-Sundrum case). We examine the fluctuations of the metric around the background solution. The equation for the transversetraceless modes of the fluctuations that decouple from the scalar field supports a naturally massless and normalizable 4D graviton. Thus, ourmodel reproduces conventional 4D gravity. The spectrum of the Kaluza-Klein modes turns out to be continuous (as in the Randall-Sundrumcase). 2007 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57066402 https://www.redalyc.org/journal/570/57066402/ https://www.redalyc.org/journal/570/57066402/html/ https://www.redalyc.org/journal/570/57066402/57066402.epub https://www.redalyc.org/journal/570/57066402/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.4 Vol.53 |
| title | Geometrical thick branes in 5D Weyl gravity |
| topic | Física, Astronomía y Matemáticas thick branes 5D Weyl manifold Localization of 4D gravity |
| url | https://www.redalyc.org/articulo.oa?id=57066402 https://www.redalyc.org/journal/570/57066402/ https://www.redalyc.org/journal/570/57066402/html/ https://www.redalyc.org/journal/570/57066402/57066402.epub https://www.redalyc.org/journal/570/57066402/movil |