Warm intermediate inflationary Universe model in the presence of a generalized Chaplygin gas
Ramón Herrera (Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla 4059, Valparaíso, 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 intermediate inflationary model in the context of generalized Chaplygin gas is investigated. We study this model in the weak and strong dissipative regimes, considering a generalized form of the dissipative coefficient Γ=Γ(T,ϕ) , and we describe the inflationary dynamics in the slow-roll approximation. We find constraints on the parameters in our model considering the Planck 2015 data, together with the condition for warm inflation T>H , and the conditions for the weak and strong dissipative regimes.