Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Aguilar, Jose Edgar Madriz"'
In this paper we use the collapse metric obtained by Carneiro and Fabris to calculate the power spectrum associated to gauge invariant fluctuations of the metric during the formation of a primordial scalar black hole at the end of inflation. We assum
Externí odkaz:
http://arxiv.org/abs/2411.07580
In this paper we investigate a power law coupling Higgs inflationary model in which the background geometry is determined by the Palatini's variational principle. The geometrical symmetries of the background geometry determine the invariant form of t
Externí odkaz:
http://arxiv.org/abs/2404.09107
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 origi
Externí odkaz:
http://arxiv.org/abs/2306.03305
In this paper we obtain some cosmological solutions that describe the present period of accelerating expansion of the universe in the framework of a geometrical gauge scalar-tensor theory of gravity. The background geometry in the model is the Weyl i
Externí odkaz:
http://arxiv.org/abs/2204.08562
Publikováno v:
In Physics of the Dark Universe February 2024 43
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
Externí odkaz:
http://arxiv.org/abs/2009.01623
Publikováno v:
Physics of the Dark Universe 30 (2020) 100706
We investigate, in the framework of a recently introduced new class of invariant geometrical scalar-tensor theory of gravity, the possibility that a viscous dark fluid can be described in a unified manner by a single scalar field. Thus we developed a
Externí odkaz:
http://arxiv.org/abs/2007.05846
In this letter assuming a 5D quantum pre-inflationary vacuum energy, we propose a manner to extend some $\Lambda(t)$-CDM models to the inflationary period by using dynamical foliations of the five-dimensional (5D) Ricci-flat space-time manifold, rega
Externí odkaz:
http://arxiv.org/abs/2005.04747
Publikováno v:
Physics of the Dark Universe 28 (2020) 100480
We derive a Higgs inflationary model in the context of a complex geometrical scalar-tensor theory of gravity. In this model the Higgs inflaton scalar field has geometrical origin playing the role of the Weyl scalar field in the original non-riemannia
Externí odkaz:
http://arxiv.org/abs/1908.06220
In this work we introduce Relativistic Quantum Geometry (RQG) on a Modern Kaluza-Klein theory by studying the boundary conditions on a extended Einstein-Hilbert action for a 5D vacuum defined on a 5D (background) Riemannian manifold. We introduce a c
Externí odkaz:
http://arxiv.org/abs/1812.05169