Warm intermediate inflation in the Randall–Sundrum II model in the light of Planck 2015 and BICEP2 results: a general dissipative coefficient
Ramón Herrera (Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla 4059, Valparaiso, Chile); Nelson Videla (Departamento de Física, FCFM, Universidad de Chile, Blanco Encalada 2008, Santiago, Chile); Marco Olivares (Facultad de Ingeniería, Universidad Diego Portales, Avenida Ejército Libertador 441, Casilla 298-V, Santiago, Chile)
A warm inflationary Universe in the Randall–Sundrum II model during intermediate inflation is studied. For this purpose, we consider the general form for the dissipative coefficient Γ(T,ϕ)=CϕTmϕm-1 , and also we analyze this inflationary model in the weak and strong dissipative regimes. We study the evolution of the Universe under the slow-roll approximation and find solutions to the full effective Friedmann equation in the brane-world framework. In order to constrain the parameters in our model, we consider the recent data from the BICEP2 to Planck 2015 data together with the necessary condition for warm inflation T>H , and also the condition from the weak (or strong) dissipative regime.
