7-11 September 2015
Warsaw, Poland
Europe/Zurich timezone

Warm intermediate inflation in the Randall–Sundrum II model in light of Planck 2015 and BICEP2 results.

8 Sep 2015, 17:50
20m
Rm 111+112 ()

Rm 111+112

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.

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