@inproceedings{4acc7b20f75740e3a3bc70c7f5862ad6,
title = "Flrw cosmology in weyl-integrable space-time",
abstract = "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.",
keywords = "Caustics formation, Modified gravity, Weyl space-time",
author = "Radouane Gannouji and Hemwati Nandan and Naresh Dadhich",
note = "Publisher Copyright: {\textcopyright} 2015, World Scientific. All rights reserved.; 13th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation, and Relativistic Field Theories, MG13 2012 ; Conference date: 01-07-2015 Through 07-07-2015",
year = "2015",
doi = "10.1142/9789814623995_0149",
language = "English",
isbn = "9789814612142",
series = "The 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",
publisher = "World Scientific",
pages = "1285--1287",
editor = "Jantzen, {Robert T.} and Kjell Rosquist and Remo Ruffini and Remo Ruffini",
booktitle = "On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories",
}