Non-perturbative gauge invariant scalar fluctuations of the metric in Higgs inflation from complex geometrical scalar-tensor theory of gravity

Autor:	Aguilar, José Edgar Madriz, Bernal, A., Montes, M., Zamarripa, J., Aceves, E.
Rok vydání:	2020
Předmět:	General Relativity and Quantum Cosmology High Energy Physics - Theory
Druh dokumentu:	Working Paper
Popis:	In this letter we investigate gauge invariant scalar fluctuations of the metric in a non-perturbative formalism for a Higgs inflationary model recently introduced in the framework of a geometrical scalar-tensor theory of gravity. In this scenario the Higgs inflaton field has its origin in the Weyl scalar field of the background geometry. We found a nearly scale invariance of the power spectrum for linear scalar fluctuations of the metric. For certain parameters of the model we obtain values for the scalar spectral index $n_s$ and the scalar to tensor ratio $r$ that fit well with the Planck 2018 results. Besides we show that in this model the trans-planckian problem can be avoided. Comment: 8 pages, no figures. Revised version. arXiv admin note: text overlap with arXiv:1908.06220
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2009.01623 Zobrazit plný text záznamu View this record from Arxiv