12 citations · 35 across the 9 of their papers we have counts for
9 papers
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…
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…
pQCD running couplings finite and monotonic in the infrared: when do they reflect the holomorphic properties of spacelike observables?
Carlos Contreras, Gorazd Cvetic, Oscar Orellana
We investigate a large class of perturbative QCD (pQCD) renormalization schemes whose beta functions are meromorphic functions of the running coupling and give finite positi…
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…
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…
On a three-layer Hele-Shaw model of enhanced oil recovery with a linear viscous profile
Prabir Daripa, Oscar Orellana, Rodrigo Meneses
We present a non-standard eigenvalue problem that arises in the linear stability of a three-layer Hele-Shaw model of enhanced oil recovery. A nonlinear transformation is introduced…
Non-self adjoint Sturm-Liouville problem with spectral and physical parameters in boundary conditions
Rodrigo Meneses Pacheco, Oscar Orellana
We present a complete description on the spectrum and eigenfunctions of the following two point boundary value problem $$(p(x)f')'-(q(x)-λr(x))f=0\;, \;\; 0<x<L \quad ; \quad f'(0)…
Perturbative QCD in acceptable schemes with holomorphic coupling
Carlos Contreras, Gorazd Cvetic, Reinhart Kogerler +2
Perturbative QCD in mass independent schemes leads in general to running coupling which is nonanalytic (nonholomorphic) in the regime of low spacelike momenta $|Q^2| \less…