70 citations · 269 across the 12 of their papers we have counts for
6 papers · 1 filter
Dynamical analysis of cosmological models with non-Abelian gauge vector fields
Alejandro Guarnizo, J. Bayron Orjuela-Quintana, César A. Valenzuela-Toledo
In this paper we study some models where non-Abelian gauge vector fields endowed with a SU(2) group representation are the unique source of inflation and dark energy. These models…
-form quintessence: exploring dark energy of forms coupled to a scalar field
Alejandro Guarnizo, Juan P. Beltrán Almeida, César A. Valenzuela-Toledo
We consider a model based on form kinetic Lagrangians in the context of dark energy. The Lagrangian of the model is built with kinetic terms of the field strength for each -…
Anisotropic inflation with coupled -forms
Juan P. Beltrán Almeida, Alejandro Guarnizo, Ryotaro Kase +2
We study the cosmology in the presence of arbitrary couplings between -forms in 4-dimensional space-time for a general action respecting gauge symmetry and parity invariance. Th…
Erratum to: Geodesic Deviation Equation in f(R) Gravity
Alejandro Guarnizo, Leonardo Castaneda, Juan M. Tejeiro
In the context of metric gravity, the Geodesic Deviation Equation (GDE) was first studied in arXiv:1010.5279v3, giving a general expression and studying a particular case, t…
Geodesic Deviation Equation in f(R) Gravity
Alejandro Guarnizo, Leonardo Castaneda, Juan M. Tejeiro
In this paper we study the Geodesic Deviation Equation (GDE) in metric f(R) gravity. We start giving a brief introduction of the GDE in General Relativity in the case of the standa…
Boundary Term in Metric f(R) Gravity: Field Equations in the Metric Formalism
Alejandro Guarnizo, Leonardo Castaneda, Juan M. Tejeiro
The main goal of this paper is to get in a straightforward form the field equations in metric f(R) gravity, using elementary variational principles and adding a boundary term in th…