On 'graceful exit' from inflationary phase in two-dimensional Liouville string cosmology

Diamandis, GA; Georgalas, BC; Mavromatos, NB; Papantonopoulos, E

dc.contributor.author	Diamandis, GA	en
dc.contributor.author	Georgalas, BC	en
dc.contributor.author	Mavromatos, NB	en
dc.contributor.author	Papantonopoulos, E	en
dc.date.accessioned	2014-03-01T01:14:54Z
dc.date.available	2014-03-01T01:14:54Z
dc.date.issued	1999	en
dc.identifier.issn	0370-2693	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13270
dc.subject	Fixed Point	en
dc.subject	Initial Condition	en
dc.subject	Numerical Analysis	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	RENORMALIZATION-GROUP	en
dc.subject.other	UNIVERSE SCENARIO	en
dc.subject.other	FIELD-THEORY	en
dc.subject.other	CONFORMAL-INVARIANCE	en
dc.subject.other	STATIONARY UNIVERSE	en
dc.subject.other	EXPANDING UNIVERSE	en
dc.subject.other	QUANTUM-GRAVITY	en
dc.subject.other	SIGMA-MODELS	en
dc.subject.other	FLOW	en
dc.subject.other	FLUCTUATIONS	en
dc.title	On 'graceful exit' from inflationary phase in two-dimensional Liouville string cosmology	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0370-2693(99)00808-4	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0370-2693(99)00808-4	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	Within the context of a super-critical (Liouville) string, we discuss (target-space) two-dimensional string cosmology. A numerical analysis indicates that the identification of time with the Liouville mode results in an expanding universe with matter which exhibits an inflationary phase, and 'graceful exit' from it, tending asymptotically to a flat-metric fixed point. This fixed point is characterized by a dilaton configuration which, depending on the initial conditions, either decreases linearly with the cosmic time, or is a finite constant. The role of matter in inducing such phenomena is emphasized. Although preliminary, this toy model seems to share all the features expected to characterize a phenomenologically acceptable cosmological string model. (C) 1999 Published by Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics	en
dc.identifier.doi	10.1016/S0370-2693(99)00808-4	en
dc.identifier.isi	ISI:000082407900009	en
dc.identifier.volume	461	en
dc.identifier.issue	1-2	en
dc.identifier.spage	57	en
dc.identifier.epage	65	en