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

被引：1
|
作者：
Madriz Aguilar, Jose Edgar [1 ]
Bernal, A. [2 ]
Montes, M. [1 ]
Zamarripa, J. [3 ]
Aceves, E. [3 ]
机构：
[1] Univ Guadalajara UdG, Ctr Univ Ciencias Exactas & Ingn CUCEI, Dept Matemat, Av Revoluc 1500 SR 44430, Guadalajara, Jalisco, Mexico
[2] Univ Guadalajara, Ctr Univ Ciencias Exactas & Ingn CUCEI, Dept Fis, Av Revoluc 1500 SR 44430, Guadalajara, Jalisco, Mexico
[3] Ctr Univ los Valles, Carretera Guadalajara Ameca Km 45-5, Ameca 46600, Jalisco, Mexico
来源：
PHYSICS OF THE DARK UNIVERSE | 2022年 / 35卷
关键词：
Weyl-Integrable geometry; Geometrical scalar-tensor gravity; Higgs cosmological inflation; Gauge invariant fluctuations of the metric; BOSON;
D O I：
10.1016/j.dark.2022.100988
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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. (C) 2022 Elsevier B.V. All rights reserved.
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页数：8
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