Eur. Phys. J. C (2011) 71: 1701
https://doi.org/10.1140/epjc/s10052-011-1701-7

Regular Article - Theoretical Physics

Warm-intermediate inflationary universe model in braneworld cosmologies

Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla, 4059, Valparaíso, Chile

^* e-mail: ramon.herrera@ucv.cl

Received: 20 May 2011
Revised: 20 June 2011
Published online: 22 July 2011

Abstract

Warm-intermediate inflationary universe models in the context of braneworld cosmologies are studied. This study is done in the weak and strong dissipative regimes. We find that the scalar potentials and dissipation coefficients in terms of the scalar field evolve as type-power-law and powers of logarithms, respectively. General conditions required for these models to be realizable are derived and discussed. We also study the scalar and tensor perturbations for each regime. We use recent astronomical observations to constrain the parameters appearing in the braneworld models.