Testing the cosmic coincidence problem and the nature of dark energy

Dark energy models which alter the relative scaling behavior of dark energy and matter could provide a natural solution to the cosmic coincidence problem-why the densities of dark energy and dark matter are comparable today. A generalized class of dark energy models is introduced which allows noncan...

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Bibliographic Details
Published in:Physical review letters 2001-10, Vol.87 (14), p.141302-141302, Article 141302
Main Authors: Dalal, N, Abazajian, K, Jenkins, E, Manohar, A V
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ENERGY MODELS
NONLUMINOUS MATTER
TESTING
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Summary:Dark energy models which alter the relative scaling behavior of dark energy and matter could provide a natural solution to the cosmic coincidence problem-why the densities of dark energy and dark matter are comparable today. A generalized class of dark energy models is introduced which allows noncanonical scaling of the ratio of dark matter and dark energy with the Robertson-Walker scale factor a(t). We show that determining whether there is a coincidence problem, and the extent of cosmic coincidence, can be addressed by several forthcoming experiments.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.87.141302