Observational constraints on undulant cosmologies
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Observational constraints on undulant cosmologies

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Observational constraints on undulant cosmologies

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Barenboim Szuchman, Gabriela Alejandra Perfil; Mena Requejo, Olga; Quigg, Chris
This document is a artículoDate2006

Este documento está disponible también en : http://dx.doi.org/10.1088/1475-7516/2006/04/008

Este documento está disponible también en : http://hdl.handle.net/10550/35400
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.

    Barenboim Szuchman, Gabriela Mena Requejo, Olga Quigg, C. 2006 Observational constraints on undulant cosmologies Journal Of Cosmology And Astroparticle Physics 06 4 008
http://dx.doi.org/10.1088/1475-7516/2006/04/008

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