Tachyonic Intermediate Inflation in DGP Cosmology with new observations

TL;DR

This paper investigates a tachyon-driven intermediate inflation model within DGP cosmology, analyzing its dynamics and parameter estimates, and comparing predictions with recent Planck satellite observations.

Contribution

It introduces a novel inflationary model based on tachyon fields in DGP cosmology and provides numerical estimates aligned with observational data.

Findings

Model parameters consistent with Planck data

Tachyon field effectively drives intermediate inflation

Perturbation analysis supports model viability

Abstract

In this article we study an intermediate inflationary model in the context of Dvali-Gabadadze-Porrati (DGP) cosmology caused by a tachyon scalar field. Considering slow-roll inflation we discuss the dynamics of the Universe. Using perturbation theory, we estimate some of the model parameters numerically and compare them with the recent results from Planck satellite.