Modified teleparallel gravity: Inflation without an inflaton

The Born-Infeld strategy to smooth theories having divergent solutions is applied to the teleparallel equivalent of general relativity. Differing from other theories of modified gravity, modified teleparallelism leads to second order equations, since the teleparallel Lagrangian only contains first d...

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Autores principales: Ferraro, Rafael, Fiorini, Franco Luis
Publicado: 2007
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n8_p_Ferraro
http://hdl.handle.net/20.500.12110/paper_15507998_v75_n8_p_Ferraro
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_15507998_v75_n8_p_Ferraro2023-06-08T16:22:01Z Modified teleparallel gravity: Inflation without an inflaton Ferraro, Rafael Fiorini, Franco Luis The Born-Infeld strategy to smooth theories having divergent solutions is applied to the teleparallel equivalent of general relativity. Differing from other theories of modified gravity, modified teleparallelism leads to second order equations, since the teleparallel Lagrangian only contains first derivatives of the vierbein. We show that the Born-Infeld-modified teleparallelism solves the particle horizon problem in a spatially flat Friedmann-Robertson-Walker (FRW) universe by providing an initial exponential expansion without resorting to an inflaton field. © 2007 The American Physical Society. Fil:Ferraro, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fiorini, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n8_p_Ferraro http://hdl.handle.net/20.500.12110/paper_15507998_v75_n8_p_Ferraro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The Born-Infeld strategy to smooth theories having divergent solutions is applied to the teleparallel equivalent of general relativity. Differing from other theories of modified gravity, modified teleparallelism leads to second order equations, since the teleparallel Lagrangian only contains first derivatives of the vierbein. We show that the Born-Infeld-modified teleparallelism solves the particle horizon problem in a spatially flat Friedmann-Robertson-Walker (FRW) universe by providing an initial exponential expansion without resorting to an inflaton field. © 2007 The American Physical Society.
author Ferraro, Rafael
Fiorini, Franco Luis
spellingShingle Ferraro, Rafael
Fiorini, Franco Luis
Modified teleparallel gravity: Inflation without an inflaton
author_facet Ferraro, Rafael
Fiorini, Franco Luis
author_sort Ferraro, Rafael
title Modified teleparallel gravity: Inflation without an inflaton
title_short Modified teleparallel gravity: Inflation without an inflaton
title_full Modified teleparallel gravity: Inflation without an inflaton
title_fullStr Modified teleparallel gravity: Inflation without an inflaton
title_full_unstemmed Modified teleparallel gravity: Inflation without an inflaton
title_sort modified teleparallel gravity: inflation without an inflaton
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v75_n8_p_Ferraro
http://hdl.handle.net/20.500.12110/paper_15507998_v75_n8_p_Ferraro
work_keys_str_mv AT ferrarorafael modifiedteleparallelgravityinflationwithoutaninflaton
AT fiorinifrancoluis modifiedteleparallelgravityinflationwithoutaninflaton
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