An accelerated closed universe

Abstract

We study a model in which a closed universe with dust and quintessence matter components may look like an accelerated flat Friedmann-Robertson-Walker (FRW) universe at low redshifts. Several quantities relevant to the model are expressed in terms of observed density parameters, ${\Omega }_M$ and ${\Omega }_{\Lambda }$, and of the associated density parameter ${\Omega }_Q$ related to the quintessence scalar field $Q$.

11 pages. For a festschrift honoring Alberto Garcia. To appear in Gen. Rel. Grav