Non-trivial frames for f(T) theories of gravity and beyond

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Some conceptual issues concerning f(T) theories - a family of modified gravity theories based on absolute parallelism - are analyzed. Due to the lack of local Lorentz invariance, the autoparallel frames satisfying the field equations are evasive to an a priori physical understanding. We exemplify th...

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Detalles Bibliográficos
Autores principales: Ferraro, R., Fiorini, F.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2011
Materias:
F(T) theories of gravity
Modified gravity
Theories with absolute parallelism
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v702_n1_p75_Ferraro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Some conceptual issues concerning f(T) theories - a family of modified gravity theories based on absolute parallelism - are analyzed. Due to the lack of local Lorentz invariance, the autoparallel frames satisfying the field equations are evasive to an a priori physical understanding. We exemplify this point by working out the vierbein (tetrad) fields for closed and open Friedmann-Robertson-Walker cosmologies. © 2011 Elsevier B.V.

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