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Observational constraints on undulant cosmologies [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
19 pages : digital, PDF file
Additional Creators
Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In an undulant universe, cosmic expansion is characterized by alternating periods of acceleration and deceleration. We examine cosmologies in which the dark-energy equation of state varies periodically with the number of e-foldings of the scale factor of the universe, and use observations to constrain the frequency of oscillation. We find a tension between a forceful response to the cosmic coincidence problem and the standard treatment of structure formation.
Report Numbers
E 1.99:fermilab-pub-05-379-t
fermilab-pub-05-379-t
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
10/01/2005.
"fermilab-pub-05-379-t"
"arXiv eprint number astro-ph/0510178"
FT
Barenboim, Gabriela; Quigg, Chris; Mena Requejo, Olga.
Funding Information
AC02-76CH03000
View MARC record | catkey: 13821564