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Acceleration at z>1?

Luca Amendola
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Abstract

Most models of dark energy predict the beginning of the accelerated epoch at z <= 1. However, there are no observational or theoretical evidences in favor of such a recent start of the cosmic acceleration. In fact, a model of dark energy coupled to dark matter is explicitely constructed that a) is accelerated even at high z; b) allows structure formation during acceleration; and c) is consistent with the type Ia supernovae Hubble diagram, including the farthest known supernova SN1997ff at z~1.7 . It is shown that the accelerated epoch in this model could have started as early as z~5.

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Luca Amendola. 2002-10-10. Acceleration at z>1?. https://doi.org/10.1046/j.1365-8711.2003.06540.x

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