Eur. Phys. J. C (2017) 77: 648
https://doi.org/10.1140/epjc/s10052-017-5218-6

Regular Article - Theoretical Physics

Intermediate inflation in a generalized induced-gravity scenario

¹ Departamento de Física, Universidad de Atacama, Avenida Copayapu 485, Copiapó, Chile
² Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla 4059, Valparaíso, Chile

^* e-mail: carlos.gonzalez@uda.cl

Received: 30 June 2017
Accepted: 9 September 2017
Published online: 25 September 2017

Abstract

An intermediate inflationary Universe model in the context of non-minimal coupling to the scalar curvature is analyzed. We will conduct our analysis in the slow-roll approximation of the inflationary dynamics and the cosmological perturbations considering a coupling of the form . Considering the trajectories in the r– plane from the Planck data, we find the constraints on the parameter space in our model.