A model of the Universe including Dark Energy accounted for by both a Quintessence Field and a (negative) Cosmological Constant

Details A model of the Universe including Dark Energy accounted for by both a Quintessence Field and a (negative) Cosmological Constant A model of the Universe including Dark Energy accounted for by both a Quintessence Field and a (negative) Cosmological Constant

2002-06-18

arxiv.org/abs/astro-ph/0206315v2

Phys.Rev. D67 (2003) 083501

Astronomy and Astrophysics

Astrophysics

11 pages, 4 figures, only the results for the single exponential potential are preserved. One author added. Some changes in th

Scientific paper

10.1103/PhysRevD.67.083501

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.

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