Phase-space analysis of teleparallel dark energy

Xu, C; Saridakis, EN; Leon, G

dc.contributor.author	Xu, C	en
dc.contributor.author	Saridakis, EN	en
dc.contributor.author	Leon, G	en
dc.date.accessioned	2014-03-01T02:11:58Z
dc.date.available	2014-03-01T02:11:58Z
dc.date.issued	2012	en
dc.identifier.issn	14757516	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29980
dc.subject	dark energy theory	en
dc.subject	modified gravity	en
dc.title	Phase-space analysis of teleparallel dark energy	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/1475-7516/2012/07/005	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1475-7516/2012/07/005	en
heal.identifier.secondary	005	en
heal.publicationDate	2012	en
heal.abstract	We perform a detailed dynamical analysis of the teleparallel dark energy scenario, which is based on the teleparallel equivalent of General Relativity, in which one adds a canonical scalar field, allowing also for a nonminimal coupling with gravity. We find that the universe can result in the quintessence-like, dark-energy-dominated solution, or to the stiff dark-energy late-time attractor, similarly to standard quintessence. However, teleparallel dark energy possesses an additional late-time solution, in which dark energy behaves like a cosmological constant, independently of the specific values of the model parameters. Finally, during the evolution the dark energy equation-of-state parameter can be either above or below -1, offering a good description for its observed dynamical behavior and its stabilization close to the cosmological-constant value. © 2012 IOP Publishing Ltd and Sissa Medialab srl.	en
heal.journalName	Journal of Cosmology and Astroparticle Physics	en
dc.identifier.doi	10.1088/1475-7516/2012/07/005	en
dc.identifier.volume	2012	en
dc.identifier.issue	7	en