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Article: Energy conditions in modified Gauss-Bonnet gravity

TitleEnergy conditions in modified Gauss-Bonnet gravity
Authors
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org
Citation
Physical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 10, article no. 104032 How to Cite?
AbstractIn considering alternative higher-order gravity theories, one is liable to be motivated in pursuing models consistent and inspired by several candidates of a fundamental theory of quantum gravity. Indeed, motivations from string/M theory predict that scalar field couplings with the Gauss-Bonnet invariant, G, are important in the appearance of nonsingular early time cosmologies. In this work, we discuss the viability of an interesting alternative gravitational theory, namely, modified Gauss-Bonnet gravity or f(G) gravity. We consider specific realistic forms of f(G) analyzed in the literature that account for the late-time cosmic acceleration and that have been found to cure the finite-time future singularities present in the dark energy models. We present the general inequalities imposed by the energy conditions and use the recent estimated values of the Hubble, deceleration, jerk and snap parameters to examine the viability of the above-mentioned forms of f(G) imposed by the weak energy condition. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/142490
ISSN
2014 Impact Factor: 4.643
2015 SCImago Journal Rankings: 1.882
ISI Accession Number ID
Funding AgencyGrant Number
CONACYT-Mexico
RGC Grant of the government of the Hong Kong SAR
Fundacao para a Ciencia e TecnologiaPTDC/FIS/102742/2008
CERN/FP/109381/2009
Funding Information:

N.M.G. acknowledges support from CONACYT-Mexico. The work of T. H. is supported by an RGC Grant of the government of the Hong Kong SAR. F.S.N.L. and J.P.M. acknowledge financial support of the Fundacao para a Ciencia e Tecnologia through the Grants Nos. PTDC/FIS/102742/2008 and CERN/FP/109381/2009.

 

DC FieldValueLanguage
dc.contributor.authorGarcia, NMen_US
dc.contributor.authorHarko, Ten_US
dc.contributor.authorLobo, FSNen_US
dc.contributor.authorMimoso, JPen_US
dc.date.accessioned2011-10-28T02:46:55Z-
dc.date.available2011-10-28T02:46:55Z-
dc.date.issued2011en_US
dc.identifier.citationPhysical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 10, article no. 104032en_US
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/10722/142490-
dc.description.abstractIn considering alternative higher-order gravity theories, one is liable to be motivated in pursuing models consistent and inspired by several candidates of a fundamental theory of quantum gravity. Indeed, motivations from string/M theory predict that scalar field couplings with the Gauss-Bonnet invariant, G, are important in the appearance of nonsingular early time cosmologies. In this work, we discuss the viability of an interesting alternative gravitational theory, namely, modified Gauss-Bonnet gravity or f(G) gravity. We consider specific realistic forms of f(G) analyzed in the literature that account for the late-time cosmic acceleration and that have been found to cure the finite-time future singularities present in the dark energy models. We present the general inequalities imposed by the energy conditions and use the recent estimated values of the Hubble, deceleration, jerk and snap parameters to examine the viability of the above-mentioned forms of f(G) imposed by the weak energy condition. © 2011 American Physical Society.-
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prd.aps.org-
dc.relation.ispartofPhysical Review D (Particles, Fields, Gravitation and Cosmology)en_US
dc.rightsPhysical Review D (Particles, Fields, Gravitation and Cosmology). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleEnergy conditions in modified Gauss-Bonnet gravityen_US
dc.typeArticleen_US
dc.identifier.emailGarcia, NM: nadiezhda@cosmo.fis.fc.ul.pten_US
dc.identifier.emailHarko, T: harko@hkucc.hku.hk-
dc.identifier.emailLobo, FSN: flobo@cii.fc.ul.pt-
dc.identifier.emailMimoso, JP: jpmimoso@cii.fc.ul.pt-
dc.identifier.authorityHarko, TC=rp01333en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevD.83.104032-
dc.identifier.scopuseid_2-s2.0-79960760061-
dc.identifier.hkuros196873en_US
dc.identifier.volume83en_US
dc.identifier.issue10, article no. 104032-
dc.identifier.isiWOS:000290721100002-
dc.publisher.placeUnited States-

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