Superconformal Subcritical Hybrid Inflation
Cosmology and Nongalactic Astrophysics
2018-06-04 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We consider D-term hybrid inflation in the framework of superconformal supergravity. In part of the parameter space, inflation continues for subcritical inflaton field value. Consequently, a new type of inflation emerges, which gives predictions for the scalar spectral index and the tensor-to-scalar ratio that are consistent with the Planck 2015 results. The potential in the subcritical regime is found to have a similar structure to one in the simplest class of superconformal alpha attractors.
Cite
@article{arxiv.1803.08274,
title = {Superconformal Subcritical Hybrid Inflation},
author = {Koji Ishiwata},
journal= {arXiv preprint arXiv:1803.08274},
year = {2018}
}
Comments
6 pages, 3 figures; few typos corrected, published version