Multi-field inflation from a higher derivative N = 1 Supergravity model
High Energy Physics - Theory
2020-10-29 v1 High Energy Physics - Phenomenology
Abstract
We study the cosmological evolution of a N = 1 supergravity model, dual to a higher derivative supergravity model coupled to scalar fields so that in the Einstein frame the model is ghost free. We find that this model admit slow roll inflationary solutions showing essentially two-field inflation. The cosmological parameters calculated for this model lie in acceptable range with corrections of the order lnN/N, N being the number of e-foldings, compared to the Starobinsky inflation model.
Keywords
Cite
@article{arxiv.2010.14917,
title = {Multi-field inflation from a higher derivative N = 1 Supergravity model},
author = {G. A. Diamandis and B. C. Georgalas and K. Kaskavelis and G. Pavlopoulos},
journal= {arXiv preprint arXiv:2010.14917},
year = {2020}
}
Comments
23 pages, 3 figures