The Cosmological Slingshot Scenario in details

Germani, C; Grandi, NE; Kehagias, A

dc.contributor.author	Germani, C	en
dc.contributor.author	Grandi, NE	en
dc.contributor.author	Kehagias, A	en
dc.date.accessioned	2014-03-01T01:34:44Z
dc.date.available	2014-03-01T01:34:44Z
dc.date.issued	2010	en
dc.identifier.issn	0001-7701	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20829
dc.subject	Early-time cosmology	en
dc.subject	Branes	en
dc.subject	Einstein-Jordan frames	en
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	D-BRANES	en
dc.subject.other	COMPACTIFICATION	en
dc.subject.other	SINGULARITY	en
dc.subject.other	INFLATION	en
dc.subject.other	UNIVERSE	en
dc.subject.other	GRAVITY	en
dc.subject.other	MODELS	en
dc.title	The Cosmological Slingshot Scenario in details	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10714-009-0819-5	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10714-009-0819-5	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	We generalize the Cosmological Slingshot Scenario for a Slingshot brane moving in a Klebanov-Strassler throat. We show that the horizon and isotropy problems of standard cosmology are avoided, while the flatness problem is acceptably alleviated. Regarding the primordial perturbations, we identify their vacuum state and elucidate the evolution from the quantum to the classical regimes. Also, we calculate their exact power spectrum showing its compatibility with current data. We discuss the bouncing solution from a four dimensional point of view. In this framework the radial and angular motion of the Slingshot brane are described by two scalar fields. We show that the bouncing solution for the scale factor in String frame is mapped into a monotonically increasing (in conformal time) solution in the Einstein frame. We finally discuss about the regularity of the geometry in Einstein frame.	en
heal.publisher	SPRINGER/PLENUM PUBLISHERS	en
heal.journalName	GENERAL RELATIVITY AND GRAVITATION	en
dc.identifier.doi	10.1007/s10714-009-0819-5	en
dc.identifier.isi	ISI:000272615900005	en
dc.identifier.volume	42	en
dc.identifier.issue	1	en
dc.identifier.spage	77	en
dc.identifier.epage	101	en