Article overview

A model of the Universe including Dark Energy accounted for by both a Quintessence Field and a (negative) Cosmological Constant
Rolando Cardenas ; Tame Gonzalez ; Yoelsy Leiva ; Osmel Martin ; Israel Quiros ;
Date:	18 Jun 2002
Journal:	Phys.Rev. D67 (2003) 083501
Subject:	astro-ph
Abstract:	In this work we present a model of the universe in which dark energy is modelled explicitely with both a dynamical quintessence field and a cosmological constant. Our results confirm the possibility of a future collapsing universe (for a given region of the parameter space), which is necessary for a consistent formulation of string theory and quantum field theory. We have also reproduced the measurements of modulus distance from supernovae with good accuracy.
Source:	arXiv, astro-ph/0206315
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