The parameterĬonstraints of the scalar field models (quintessence, phantom, quintom and Or discontinuous behavior, depending on the interaction value. To cross the phantom divide line, and in several cases present an oscillatory The resultant effective equation of state is now able Lead to an improvement in the fit of $-2\ln\Delta \Like_= 5.13$,Ĭompared to $\Lambda$CDM. We find that adding one degree ofįreedom, by an interacting term, the dynamics enriches considerably and could Including an interacting term between fields. Of models, one as the sum of the quintessence and phantom potentials and other Then we present some implicationsįor a combination of two fields, named as Quintom models. Satisfy current cosmological observations. Quadratic potentials and show that a more complex model should bear in mind to We start with the canonical Quintessence and Phantom fields with
Alberto V\'azquez and 5 other authors Download PDF Abstract: The main aim of this paper is to present the multi scalar field components asĬandidates to be the dark energy of the universe and their observationalĬonstraints. Download a PDF of the paper titled Coupled Multi Scalar Field Dark Energy, by J.
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