Tachyon constant-roll inflation in Randall-Sundrum II cosmology

Abstract

We study inflation in a model with constant second slow-roll parameter $\eta$. In this case, the Hubble expansion rate equation has analytical solutions describing four possible, nontrivial inflation scenarios. The evolution of the inflaton governed by a tachyon field is studied in the framework of the standard and Randall-Sundrum II cosmology. The attractor behavior of the solution is briefly demonstrated. Finally, the calculated values of the parameters $n_{\mathrm{s}}$ and $r$ are compared with observational data.

References in corpus (3)

• Brane Constant-roll Inflation
• Anisotropic constant-roll inflation for the Dirac-Born-Infeld model
• Tachyon inflation in an AdS braneworld with back-reaction

Cited by in corpus (1)

• Primordial black hole formation in k-inflation models