A late-time transition in the equation of state versus Lambda-CDM

Details A late-time transition in the equation of state versus Lambda-CDM A late-time transition in the equation of state versus Lambda-CDM

2002-05-24

arxiv.org/abs/astro-ph/0205428v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to appear in the proceedings of XXXVIIth Rencontres de Moriond, "The Cosmological Model", March 2002

Scientific paper

We study a model of the dark energy which exhibits a rapid change in its
equation of state w(z), such as occurs in vacuum metamorphosis. We compare the
model predictions with CMB, large scale structure and supernova data and show
that a late-time transition is marginally preferred over standard Lambda-CDM.

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