Dynamics of Robertson-Walker spacetimes with diffusion

doi:10.1016/j.aop.2015.01.010

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/33733

Registo completo

Campo DC	Valor	Idioma
dc.contributor.author	Alho, Artur	por
dc.contributor.author	Calogero, Simone Carmelo	por
dc.contributor.author	Ramos, M. P. Machado	por
dc.contributor.author	Soares, A. J.	por
dc.date.accessioned	2015-02-09T15:33:57Z	-
dc.date.available	2015-02-09T15:33:57Z	-
dc.date.issued	2015-03	-
dc.date.submitted	2014-09-16	-
dc.identifier.issn	0003-4916	por
dc.identifier.uri	https://hdl.handle.net/1822/33733	-
dc.description.abstract	We study the dynamics of spatially homogeneous and isotropic spacetimes containing a fluid undergoing microscopic velocity diffusion in a cosmological scalar field. After deriving a few exact solutions of the equations, we continue by analyzing the qualitative behavior of general solutions. To this purpose we recast the equations in the form of a two dimensional dynamical system and perform a global analysis of the flow. Among the admissible behaviors, we find solutions that are asymptotically de-Sitter both in the past and future time directions and which undergo accelerated expansion at all times.	por
dc.description.sponsorship	Fundação para a Ciência e a Tecnologia (FCT)	por
dc.language.iso	eng	por
dc.publisher	Elsevier	por
dc.relation	info:eu-repo/grantAgreement/FCT/3599-PPCDT/126662/PT	-
dc.rights	openAccess	por
dc.subject	Cosmology	por
dc.subject	Diffusion	por
dc.subject	Scalar field	por
dc.subject	Dynamical systems	por
dc.title	Dynamics of Robertson-Walker spacetimes with diffusion	por
dc.type	article	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	The on-line publication is available at www.sciencedirect.com/science/article/pii/S0003491615000135#	por
sdum.publicationstatus	published	por
oaire.citationStartPage	475	por
oaire.citationEndPage	488	por
oaire.citationTitle	Annals of Physics	por
oaire.citationVolume	354	por
dc.identifier.doi	10.1016/j.aop.2015.01.010	por
dc.subject.fos	Ciências Naturais::Matemáticas	por
dc.subject.wos	Science & Technology	por
sdum.journal	Annals of Physics	por
Aparece nas coleções:	CMAT - Artigos em revistas com arbitragem / Papers in peer review journals