One more step toward the noncommutative brane inflation

TL;DR

This paper extends a noncommutative spacetime inflation model to a Randall-Sundrum II braneworld, achieving a singularity-free, bouncing inflationary scenario that can generate scale-invariant scalar perturbations without additional fields.

Contribution

It generalizes a noncommutative spacetime inflation approach to braneworld scenarios, resulting in a novel bouncing inflation model without extra scalar or vector fields.

Findings

Achieves a nonsingular bouncing inflationary solution

Potential to produce scale-invariant scalar perturbation spectrum

No need for auxiliary scalar or vector fields

Abstract

Recently a new approach to inflation proposal has been constructed via the smeared coherent state picture of spacetime noncommutativity. Here we generalize this viewpoint to a Randall-Sundrum II braneworld scenario. This model realizes an inflationary, bouncing solution without recourse to any axillary scalar or vector fields. There is no initial singularity and the model has the potential to produce scale invariant spectrum of scalar perturbations.