Observational information for f(T) theories and dark torsion

In the present work we analyze and compare the information coming from different observational data sets in the context of a sort of f(T) theories. We perform a joint analysis with measurements of the most recent type Ia supernovae (SNe Ia), Baryon Acoustic Oscillation (BAO), Cosmic Microwave Backgr...

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Detalles Bibliográficos
Publicado: 2011
Materias:
Dark energy experiments
Dark energy theory
Modified gravity
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v695_n5_p405_Bengochea
http://hdl.handle.net/20.500.12110/paper_03702693_v695_n5_p405_Bengochea
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03702693_v695_n5_p405_Bengochea
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spelling paper:paper_03702693_v695_n5_p405_Bengochea2023-06-08T15:36:51Z Observational information for f(T) theories and dark torsion Dark energy experiments Dark energy theory Modified gravity In the present work we analyze and compare the information coming from different observational data sets in the context of a sort of f(T) theories. We perform a joint analysis with measurements of the most recent type Ia supernovae (SNe Ia), Baryon Acoustic Oscillation (BAO), Cosmic Microwave Background radiation (CMB), Gamma-Ray Bursts data (GRBs) and Hubble parameter observations (OHD) to constraint the only new parameter these theories have. It is shown that when the new combined BAO/CMB parameter is used to put constraints, the result is different from previous works. We also show that when we include Observational Hubble Data (OHD) the simpler ΛCDM model is excluded to one sigma level, leading the effective equation of state of these theories to be of phantom type. Also, analyzing a tension criterion for SNe Ia and other observational sets, we obtain more consistent and better suited data sets to work with these theories. © 2010 Elsevier B.V. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v695_n5_p405_Bengochea http://hdl.handle.net/20.500.12110/paper_03702693_v695_n5_p405_Bengochea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Dark energy experiments
Dark energy theory
Modified gravity
spellingShingle Dark energy experiments
Dark energy theory
Modified gravity
Observational information for f(T) theories and dark torsion
topic_facet Dark energy experiments
Dark energy theory
Modified gravity
description In the present work we analyze and compare the information coming from different observational data sets in the context of a sort of f(T) theories. We perform a joint analysis with measurements of the most recent type Ia supernovae (SNe Ia), Baryon Acoustic Oscillation (BAO), Cosmic Microwave Background radiation (CMB), Gamma-Ray Bursts data (GRBs) and Hubble parameter observations (OHD) to constraint the only new parameter these theories have. It is shown that when the new combined BAO/CMB parameter is used to put constraints, the result is different from previous works. We also show that when we include Observational Hubble Data (OHD) the simpler ΛCDM model is excluded to one sigma level, leading the effective equation of state of these theories to be of phantom type. Also, analyzing a tension criterion for SNe Ia and other observational sets, we obtain more consistent and better suited data sets to work with these theories. © 2010 Elsevier B.V.
title Observational information for f(T) theories and dark torsion
title_short Observational information for f(T) theories and dark torsion
title_full Observational information for f(T) theories and dark torsion
title_fullStr Observational information for f(T) theories and dark torsion
title_full_unstemmed Observational information for f(T) theories and dark torsion
title_sort observational information for f(t) theories and dark torsion
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v695_n5_p405_Bengochea
http://hdl.handle.net/20.500.12110/paper_03702693_v695_n5_p405_Bengochea
_version_ 1768544688050012160

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