93 citations · 340 across the 32 of their papers we have counts for
33 papers
Decomposition of the connection in affine models of gravity: Can the connection tell us something about the metric?
Oscar Castillo-Felisola, Bastian Grez, Aureliano Skirzewski +1
In physics geometrical connections are the mean to create models with local symmetries (gauge connections), as well as general diffeomorphisms invariance (affine connections). Here…
On the Kaluza-Klein geometric theory in affine spaces
Oscar Castillo-Felisola, Aureliano Skirzewski, Jefferson Vaca-Santana
In this work, we develop a generalization of Kaluza-Klein theory by considering a purely affine framework, without assuming a prior metric structure. We formulate the dimensional r…
A polynomial affine model of gravity: after ten years
Oscar Castillo-Felisola, Bastian Grez, Manuel Morocho-López +4
The polynomial affine model of gravity was proposed as an alternative to metric and metric-affine gravitational models. What at the beginning was thought as a source of unpredictab…
Cosmological Solutions in Polynomial Affine Gravity with Torsion
Oscar Castillo-Felisola, Bastian Grez, Gonzalo J. Olmo +2
The Polynomial Affine Gravity is an alternative gravitational model, where the interactions are mediated solely by the affine connection, instead of the metric tensor. In this pape…
A model for cosmological perturbations in affine gravity
Oscar Castillo-Felisola, Radouane Gannouji, Manuel Morocho-López +1
In this paper, we present the cosmological perturbation formalism for theories within the framework of affine gravity. These theories are distinguished by their connection, devoid…
Inflationary scenarios in an effective polynomial affine model of gravity
Oscar Castillo-Felisola, Bastian Grez, Jose Perdiguero +1
In this paper we inquire inflationary scenarios built on a simplified version of the polynomial affine model of gravity. Given the absence of a metric tensor in the formulation of…
Does the metric play a fundamental role in the building of gravitational models?
Oscar Castillo-Felisola, Jose Perdiguero
The idea that General Relativity could be an effective model, of a yet unknown theory of gravity, has gained momentum among theoretical physicists. The polynomial affine model of g…
Polynomial affine gravity in 3+1 dimensions
José Perdiguero, Oscar Castillo-Felisola
The polynomial affine gravity is an alternative model of gravity whose fundamental field is the affine connection, and it is invariant under the complete group of diffeomorphisms.…
Cadabra and Python algorithms in General Relativity and Cosmology II: Gravitational Waves
Oscar Castillo-Felisola, Dominic T. Price, Mattia Scomparin
Computer Algebra Systems (CASs) like Cadabra Software play a prominent role in a wide range of research activities in physics and related fields. We show how Cadabra language is ea…
Cadabra and Python algorithms in General Relativity and Cosmology I: Generalities
Oscar Castillo-Felisola, Dominic T. Price, Mattia Scomparin
The aim of this work is to present a series of concrete examples which illustrate how the computer algebra system Cadabra can be used to manipulate expressions appearing in General…
Polynomial affine model of gravity in three-dimensions
Oscar Castillo-Felisola, Bastian Grez, Oscar Orellana +4
In this work, we explore a three-dimensional formulation of the polynomial affine model of gravity, which is a model that extends general relativity by relaxing the equivalence pri…
Aspects of the polynomial affine model of gravity in three dimensions
Oscar Castillo-Felisola, Oscar Orellana, José Perdiguero +3
The polynomial affine gravity is a model that is built up without the explicit use of a metric tensor field. In this article we reformulate the three-dimensional model and, given t…
Emergent metric and geodesic analysis in cosmological solutions of (torsion-free) Polynomial Affine Gravity
Oscar Castillo-Felisola, Jose Perdiguero, Oscar Orellana +1
Starting from an affinely connected space, we consider a model of gravity whose fundamental field is the connection. We build up the action using as sole premise the invariance und…
Beyond Einstein: A Polynomial Affine Model of Gravity
Oscar Castillo-Felisola
We show that the effective field equations for a recently formulated polynomial affine model of gravity, in the sector of a torsion-free connection, accept general Einstein manifol…
Dirac spinors and their application to Bianchi-I space-times in 5 dimensions
Stefano Vignolo, Luca Fabbri, Oscar Castillo-Felisola
We consider a five-dimensional Einstein--Cartan spacetime upon which Dirac spinor fields can be defined. Dirac spinor fields in five and four dimensions share many features, like t…
Cosmological solutions to polynomial affine gravity in the torsion-free sector
Oscar Castillo-Felisola, José Perdiguero, Oscar Orellana
We find possible cosmological models of the Polynomial Affine Gravity described by connections that are either compatible or not with a metric. When possible, we compare them with…
High-dimensional neutrino masses
G. Anamiati, Oscar Castillo-Felisola, Renato M. Fonseca +2
For Majorana neutrino masses the lowest dimensional operator possible is the Weinberg operator at . Here we discuss the possibility that neutrino masses originate from higher…
Limits on beyond standard model messengers as ultra high energy cosmic rays
Oscar Castillo-Felisola, Cristobal Corral, Piotr Homola +1
Up to date, there is no consensus regarding the origin of ultra-high energy cosmic rays (UHECR) beyond the Greisen--Zatsepin--Kuzmin (GZK) limit. In order for these UHECRs to reach…
Corrections to (pseudo)scalars decay into a fermion pair from gravitational torsion
Felipe Rojas Abatte, Jilberto Zamora-Saa, Oscar Castillo-Felisola +2
We study the contribution of the torsion-descendent four-fermion contact interaction to the decay width of a neutral (pseudo)scalar field into a fermion pair. This new interaction…
Kaluza-Klein cosmology from five-dimensional Lovelock-Cartan theory
Oscar Castillo-Felisola, Cristóbal Corral, Simón del Pino +1
We study the Kaluza-Klein dimensional reduction of the Lovelock-Cartan theory in five-dimensional spacetime, with a compact dimension of topology. We find cosmological soluti…
Einstein's gravity from a polynomial affine model
Oscar Castillo-Felisola, Aureliano Skirzewski
We show that the effective field equations for a recently formulated polynomial affine model of gravity, in the sector of a torsion-free connection, accept general Einstein manifol…
Corrections to Higgs width decay into a fermion pair from gravitational torsion
Oscar Castillo-Felisola, Bastian Diaz Saez, Felipe Rojas +2
We consider the change of the Higgs width decay into a fermion pair with respect to the standard model, due to the four-fermion contact interaction coming from the existence of gra…
Left-Right Symmetric Models at the High-Intensity Frontier
Oscar Castillo-Felisola, Claudio O. Dib, Juan C. Helo +2
We study constraints on Left-Right Symmetric models from searches of semileptonic decays of , , mesons, mediated by heavy neutrinos with masses GeV tha…
Axions in gravity with torsion
Oscar Castillo-Felisola, Cristobal Corral, Sergey Kovalenko +2
We study a scenario allowing a solution of the strong charge parity problem via the Peccei-Quinn mechanism, implemented in gravity with torsion. In this framework there appears a t…