71 research outputs found
Toy models of Universe with an Effective varying -Term in Lyra Manifold
We are interested by the study of several toy models of the Universe in
presence of interacting quintessence DE models. Models are considered in the
cosmology with an Effective varying -Term in Lyra Manifold. The
motivation of the phenomenological models discussed in this paper is to obtain
corresponding models to describe and understand an accelerated expansion of the
Universe for the later stage of evolution. Phenomenology of the models
describes by the phenomenological forms of ().
Concerning to the mathematical hardness we discuss results numerically and
graphically. Obtained results give us hope that proposed models can work as
good models for old Universe and in good agreement with observational data
Some interacting dark energy models
In this paper we study new cosmological models involving new forms of
non-gravitational interaction between cold dark matter and dark energy. The
main purpose is to demonstrate the applicability of the forms of interaction to
the problem in modern cosmology known as accelerated expansion of the large
scale universe. It is well known, that a non-gravitational interaction can
improve theoretical prediction, but a fundamental theory allowing to derive the
form of the interaction is missing. Therefore, an active sought to find a
correct form of the interaction from various phenomenological assumptions is
still one of the active branches of research in modern cosmology. Besides
cosmographic analysis, we perform analysis
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