Phys. Rev. D 67, 083501 (2003) [5 pages]Model of the universe including dark energy accounted for by both a quintessence field and a (negative) cosmological constantReceived 9 July 2002; revised 27 January 2003; published 17 April 2003 In this work we present a model of the universe in which dark energy is modeled explicitly 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 both string and quantum field theories. The predictions of this model for distance modulus of supernovae are similar to those of the standard ΛCDM model. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.67.083501
DOI:
10.1103/PhysRevD.67.083501
PACS:
98.80.Jk, 98.80.Bp, 98.80.Cq
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