Constraining f(R) theories with cosmography

A method to set constraints on the parameters of extended theories of gravitation is presented. It is based on the comparison of two series expansions of any observable that depends on H(z). The first expansion is of the cosmographical type, while the second uses the dependence of H with z furnished...

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Autores principales: Teppa Pannia, Florencia Anabella, Pérez Bergliaffa, Santiago Esteban
Formato: Articulo
Lenguaje:Español
Publicado: 2013
Materias:
Ciencias Astronómicas
modified gravity
gravity
cosmology of theories beyond the SM
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130648
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130648
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Astronómicas
modified gravity
gravity
cosmology of theories beyond the SM
spellingShingle Ciencias Astronómicas
modified gravity
gravity
cosmology of theories beyond the SM
Teppa Pannia, Florencia Anabella
Pérez Bergliaffa, Santiago Esteban
Constraining f(R) theories with cosmography
topic_facet Ciencias Astronómicas
modified gravity
gravity
cosmology of theories beyond the SM
description A method to set constraints on the parameters of extended theories of gravitation is presented. It is based on the comparison of two series expansions of any observable that depends on H(z). The first expansion is of the cosmographical type, while the second uses the dependence of H with z furnished by a given type of extended theory. When applied to f(R) theories together with the redshift drift, the method yields limits on the parameters of two examples (the theory of Hu and Sawicki [1], and the exponential gravity introduced by Linder [2]) that are compatible with or more stringent than the existing ones, as well as a limit for a previously unconstrained parameter.
format Articulo
Articulo
author Teppa Pannia, Florencia Anabella
Pérez Bergliaffa, Santiago Esteban
author_facet Teppa Pannia, Florencia Anabella
Pérez Bergliaffa, Santiago Esteban
author_sort Teppa Pannia, Florencia Anabella
title Constraining f(R) theories with cosmography
title_short Constraining f(R) theories with cosmography
title_full Constraining f(R) theories with cosmography
title_fullStr Constraining f(R) theories with cosmography
title_full_unstemmed Constraining f(R) theories with cosmography
title_sort constraining f(r) theories with cosmography
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/130648
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bdutipo_str Repositorios
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