A late-accelerating universe with no dark energy - And a finite-temperature big bang

Brown, RA; Maartens, R; Papantonopoulos, E; Zamarias, V

dc.contributor.author	Brown, RA	en
dc.contributor.author	Maartens, R	en
dc.contributor.author	Papantonopoulos, E	en
dc.contributor.author	Zamarias, V	en
dc.date.accessioned	2014-03-01T01:21:44Z
dc.date.available	2014-03-01T01:21:44Z
dc.date.issued	2005	en
dc.identifier.issn	1475-7516	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16340
dc.subject	Cosmology with extra dimensions	en
dc.subject	Physics of the early universe	en
dc.subject	String theory and cosmology	en
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	ASYMMETRIC BRANES	en
dc.subject.other	COSMOLOGY	en
dc.subject.other	GRAVITY	en
dc.subject.other	SINGULARITIES	en
dc.subject.other	WORLD	en
dc.subject.other	BULK	en
dc.title	A late-accelerating universe with no dark energy - And a finite-temperature big bang	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/1475-7516/2005/11/008	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1475-7516/2005/11/008	en
heal.identifier.secondary	008	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	Brane-world models offer the possibility of explaining the late acceleration of the universe via infra-red modifications to general relativity, rather than a dark energy field. However, one also expects ultra-violet modifications to general relativity, when high-energy stringy effects in the early universe begin to grow. We generalize the DGP brane-world model via an ultra-violet modification, in the form of a Gauss-Bonnet term in the bulk action. The combination of infra-red and ultra-violet modifications produces an intriguing cosmology. The DGP feature of late-time acceleration without dark energy is preserved, but there is an entirely new feature - there is no infinite-temperature big bang in the early universe. The universe starts with finite density and pressure, from a 'quiet' and 'sudden' curvature singularity. © 2005 IOP Publishing Ltd.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Cosmology and Astroparticle Physics	en
dc.identifier.doi	10.1088/1475-7516/2005/11/008	en
dc.identifier.isi	ISI:000233746000003	en
dc.identifier.issue	11	en
dc.identifier.spage	131	en
dc.identifier.epage	143	en