E-Model α-Attractor on Brane from Planck Data and Reheating Temperature

Abstract

In inflation sdandard scenario with α-attractors E-model, the infaltionary parameters determine by the e-fold number N and by the parameter α. Therefore, we study this model in the framework of the Randall—Sundrum type-II braneworld (RSII). From the scalar curvature perturbation constrained by the recent observation values, and in the high-energy limit V ≫ λ, we can reduce the value range of the parameter α in order to render the inflationary parameters (n_s, r, and \({{d{n_s}} \over {d\;\ln \;k}}\)) compatible with the latest Planck data. For the reheating epoch, we have computed and discussed the reheating temperature T_rh for several parameters, and it is large T_rh ~ 10¹³ GeV.