Quintessence or Phoenix?
Abstract
Description
We show that it is impossible to determine the state equation of quintessence models on the basis of pure observational SNIa data. An independent estimate of $Ω_{M0}$ is necessary. Also in this most favourable case the situation can be problematic.
7 pages, 4 figures - RUBANO@NA.INFN.IT
7 pages, 4 figures - RUBANO@NA.INFN.IT