Flrw cosmology in weyl-integrable space-time

Radouane Gannouji, Hemwati Nandan, Naresh Dadhich

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

We investigate the Weyl space-time extension of general relativity. We have derived the equations of evolution for expansion, shear and rotation. We have performed the study of the FLRW cosmology through focusing and defocusing of the geodesic congruences in the Weyl space-time. In particular, the Einstein-Palatini formalism turns out to reduce to a subclass of this spacetime, the Weyl integrable space-time (WIST). In this particular case we have considered the Starobinsky modification, f(R) = R + βR2 − 2Λ, of gravity in order to study the formation of the caustics. In this model, it is possible to have a Big Bang singularity free cyclic Universe but unfortunately the periodicity turns out to be extremely short.

Idioma originalInglés
Título de la publicación alojadaOn Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories
EditoresRobert T. Jantzen, Kjell Rosquist, Remo Ruffini, Remo Ruffini
EditorialWorld Scientific
Páginas1285-1287
Número de páginas3
ISBN (versión impresa)9789814612142
DOI
EstadoPublicada - 2015
Publicado de forma externa
Evento13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012 - Stockholm, Suecia
Duración: 1 jul. 20157 jul. 2015

Serie de la publicación

NombreThe 13th Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proceedings of the MG13 Meeting on General Relativity, 2012
Volumen0

Conferencia

Conferencia13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012
País/TerritorioSuecia
CiudadStockholm
Período1/07/157/07/15

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