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

B.A. Bassett , M. Kunz , J. Silk , C. Ungarelli

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classification 🌌 astro-ph

keywords equationlambda-cdmlate-timemodelstatetransitionchangecompare

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

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