Brane inflation driven by an arctan potential: CMB constraints and Reheating

TL;DR

This paper explores a brane inflation model with an arctan potential, analyzing its early universe dynamics, reheating, and observational constraints, demonstrating its compatibility with Planck 2018 and other cosmological data.

Contribution

It introduces a supergravity-inspired arctan potential for brane inflation and provides a comprehensive analysis of its observational viability using statistical methods.

Findings

Model consistent with Planck 2018 data

Reheating analysis supports viable inflationary scenarios

Parameter estimation aligns with current cosmological observations

Abstract

We investigate the early universe evolution in the context of brane inflation driven by a supergravity-inspired $\arctan$ potential. We performed a slow-roll and a semi-analytical reheating analyses and obtained constraints on the inflationary parameters in agreement with Planck 2018 data. We also employed a Markov Chain Monte Carlo analysis to perform a parameter estimation of the cosmological parameters, obtaining results in good agreement with the currently available cosmic microwave background and baryon acoustic oscillation data. This work establishes the general theoretical predictions of the $\arctan$ model, with the results of the statistical analysis corroborating its observational viability.