Cosmological singularities and modified theories of gravity

Fernández Jambrina, Leonardo and Lazkoz, Ruth (2009). Cosmological singularities and modified theories of gravity. In: "Spanish Relativity Meeting 2008; Encuentros Relativistas Españoles (ERE2008)", 15/09/2008-19/09/2008, Salamanca, España. ISBN 978-0-7354-0658-2. pp..

Description

Title: Cosmological singularities and modified theories of gravity
Author/s:
  • Fernández Jambrina, Leonardo
  • Lazkoz, Ruth
Item Type: Presentation at Congress or Conference (Article)
Event Title: Spanish Relativity Meeting 2008; Encuentros Relativistas Españoles (ERE2008)
Event Dates: 15/09/2008-19/09/2008
Event Location: Salamanca, España
Title of Book: Spanish Relativity Meeting 2008 Proceedings
Date: 2009
ISBN: 978-0-7354-0658-2
Subjects:
Freetext Keywords: Dark energy, modified gravity, singularities, Friedmann equation
Faculty: E.T.S.I. Navales (UPM)
Department: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We consider perturbative modifications of the Friedmann equations in terms of density corresponding to modified theories of gravity proposed as an alternative route to comply with the observed accelerated expansion of the universe. Assuming that the present matter content of the universe is a pressureless fluid, the possible singularities that may arise as the final state of the universe are surveyed. It is shown that, at most, two coefficients of the perturbative expansion of the Friedman equations are relevant for the analysis. Some examples of application of the perturbative scheme are included.

More information

Item ID: 3158
DC Identifier: http://oa.upm.es/3158/
OAI Identifier: oai:oa.upm.es:3158
Official URL: http://campus.usal.es/~ere2008/website/modules/tinyd0/index.php?id=1
Deposited by: Memoria Investigacion
Deposited on: 01 Jun 2010 10:43
Last Modified: 20 Apr 2016 12:42
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