Brane inflation driven by noncanonical scalar field

TL;DR

This paper investigates brane inflation driven by a noncanonical scalar field within the RS-II braneworld model, analyzing its compatibility with observations and deriving the inflation duration.

Contribution

It introduces a noncanonical scalar field with power-law kinetic terms into RS-II braneworld inflation, providing new insights into inflation dynamics and observational consistency.

Findings

The model aligns with recent observational data.

Inflation can occur after the five-dimensional Planck time.

Theoretical predictions match observational constraints.

Abstract

In this work, we are going to study the inflationary era of the Universe evolution by using second type of Randall-Sundrum model (RS-II) braneworld gravity. It is supposed that the Universe is dominated by scalar field with noncanonical kinetic terms. The kinetic term is supposed as a power-law function, and the work is performed for two typical cases. Using recent observations, the free parameters of the model are determined. It is shown that theoretical results are in acceptable agreement with observational data. Finally the time period of inflation is derived approximately, and it is found out that the inflation could occur after the five-dimensional Planck time.