Uniform rate inflation on the brane
High Energy Physics - Phenomenology
2024-06-11 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We propose a model of uniform rate inflation on the brane. The potential is given by a hyperbolic cosine function plus a negative cosmological constant. The equation of motion is solved analytically without using slow-roll approximation. The result is that the inflaton field is rolling at a constant speed. The prediction for cosmological perturbations depends on the field value at the end of inflation. The experimental constraints could be satisfied in the parameter space.
Keywords
Cite
@article{arxiv.2312.17409,
title = {Uniform rate inflation on the brane},
author = {Chia-Min Lin and Rei Tamura and Keiko I. Nagao},
journal= {arXiv preprint arXiv:2312.17409},
year = {2024}
}
Comments
11 pages, 11 figures