Gravitational waves during Higgs inflation from complex geometrical scalar-tensor theory of gravity
Abstract
In this paper we investigate tensor fluctuations of the metric at the end of a Higgs inflationary period in the context of a recently introduced complex geometrical scalar-tensor theory of gravity. In our model the Higgs field has a geometrical origin and the affine connection is determined by the Palatini's principle. Additionally, we consider an extra contribution to the tensor-fluctuations equation coming from the vacuum term in the energy momentum tensor associated to the Higgs field. The Higgs potential is rescaled by the non-canonicity function of the kinetic term of the field which is modified by the symmetry group of the background geometry. We obtain a nearly scale invariant spectrum and a scalar to tensor ratio in agreement with PLANCK 2018 cosmological results.
Keywords
Cite
@article{arxiv.2306.03305,
title = {Gravitational waves during Higgs inflation from complex geometrical scalar-tensor theory of gravity},
author = {José Edgar Madriz Aguilar and A. Bernal and F. Aceves de la Cruz and J. A. Licea},
journal= {arXiv preprint arXiv:2306.03305},
year = {2024}
}
Comments
9 pages, 2 figures