Speaker
Nelson Videla
(Universidad de Chile, Chile)
Description
In the present work we study the possibility that a higher dimensional scenario, in particular the RS II
brane-world model, can describe the dynamics of the Universe in its very early epochs. We propose this possibility
in the context of warm inflation scenario, for a Universe evolving according to
the intermediate scale factor, and how a generalized form of the dissipative coefficient $\Gamma(T,\phi)\propto T^{m}/\phi^{m-1}$
influences the dynamics of our model. We study the inflationary dynamics in the weak and strong dissipative
regimes of warm inflation, under the slow-roll approximation, and find solutions to the full effective Friedmann equations
in the brane-world framework. By other hand, we will compute the cosmological perturbations, which are
written in terms of several parameters. In order to constrain these parameters, we consider the
recent data from BICEP2 and Planck 2015, together with the necessary
condition for warm inflation, $T>H$, and also the condition from the weak (or strong) dissipative regime.
