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Article: Energy conditions in modified Gauss-Bonnet gravity
Title | Energy conditions in modified Gauss-Bonnet gravity | ||||||||
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Authors | |||||||||
Issue Date | 2011 | ||||||||
Publisher | American 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? | ||||||||
Abstract | In 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 Identifier | http://hdl.handle.net/10722/142490 | ||||||||
ISSN | 2014 Impact Factor: 4.643 | ||||||||
ISI Accession Number ID |
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 Field | Value | Language |
---|---|---|
dc.contributor.author | Garcia, NM | en_US |
dc.contributor.author | Harko, T | en_US |
dc.contributor.author | Lobo, FSN | en_US |
dc.contributor.author | Mimoso, JP | en_US |
dc.date.accessioned | 2011-10-28T02:46:55Z | - |
dc.date.available | 2011-10-28T02:46:55Z | - |
dc.date.issued | 2011 | en_US |
dc.identifier.citation | Physical Review D (Particles, Fields, Gravitation and Cosmology), 2011, v. 83 n. 10, article no. 104032 | en_US |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/10722/142490 | - |
dc.description.abstract | In 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.language | eng | en_US |
dc.publisher | American Physical Society. The Journal's web site is located at http://prd.aps.org | - |
dc.relation.ispartof | Physical Review D (Particles, Fields, Gravitation and Cosmology) | en_US |
dc.rights | Copyright 2011 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevD.83.104032 | - |
dc.title | Energy conditions in modified Gauss-Bonnet gravity | en_US |
dc.type | Article | en_US |
dc.identifier.email | Garcia, NM: nadiezhda@cosmo.fis.fc.ul.pt | en_US |
dc.identifier.email | Harko, T: harko@hkucc.hku.hk | - |
dc.identifier.email | Lobo, FSN: flobo@cii.fc.ul.pt | - |
dc.identifier.email | Mimoso, JP: jpmimoso@cii.fc.ul.pt | - |
dc.identifier.authority | Harko, TC=rp01333 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevD.83.104032 | - |
dc.identifier.scopus | eid_2-s2.0-79960760061 | - |
dc.identifier.hkuros | 196873 | en_US |
dc.identifier.volume | 83 | en_US |
dc.identifier.issue | 10 | - |
dc.identifier.spage | article no. 104032 | - |
dc.identifier.epage | article no. 104032 | - |
dc.identifier.isi | WOS:000290721100002 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1550-2368 | - |