Résumé / Abstract Seminaire_GReCO

"DBI inflation coupled to matter"

E. Cluzel

We consider k-inflation models such as DBI inflation where the action is a non-linear function of both the inflaton and the inflaton kinetic term. After a brief review, we focus on a scalar-tensor extension of k-inflation coupled to matter for which we derive a modified Mukhanov-Sasaki equation for the curvature perturbation. Significant corrections to the power spectrum appear when the coupling function changes abruptly along the inflationary trajectory.

jeudi 26 mai 2011 - 11:00
Salle des séminaires Évry Schatzman,
Institut d'Astrophysique de Paris

Page web du séminaire / Seminar's webpage