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- Carlos Nieto, Yeinzon Rodríguez, Vector inflation in the framework of non-Abelian gauge theories , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 38 No. 146 (2014)
- Gabriel A. Mariño, Yeinzon Rodríguez, EFFECT OF THE SPATIAL CURVATURE OF THE UNIVERSE ON THE ANGULAR SPECTRUM OF THE TEMPERATURE ANISOTROPIES IN THE COSMIC BACKGROUND RADIATION , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 32 No. 124 (2008)
- Carlos A. Sierra, Yeinzon Rodríguez, VECTOR INFLATION , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 35 No. 135 (2011)
- José F. Rodríguez, Yeinzon Rodríguez, THE RELAXED UNIVERSE MECHANISM: A POSSIBLE DYNAMICAL AND FREE OF FINE-TUNING SOLUTION TO THE OLD COSMOLOGICAL CONSTANT PROBLEM , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 36 No. 141 (2012)
- Gabriel Gómez, Yeinzon Rodríguez, AN INFLATIONARY MODEL WITHOUT INFLATONS , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 34 No. 133 (2010)
- Yeinzon Rodríguez, ON-GAUSSIANITY AND LOOP CORRECTIONS IN A QUADRATIC TWO-FIELD SLOW-ROLL MODEL OF INFLATION. PART I , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 32 No. 125 (2008)
- César A. Valenzuela-Toledo, Yeinzon Rodríguez, STATISTICAL ANISOTROPY, NON-GAUSSIANITY, AND PERTURBATIONS IN VECTOR FIELDS , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 35 No. 135 (2011)
- César D. Peralta, Yeinzon Rodríguez, IDENTIFYING THE INFLATON WITH THE STANDARD MODEL HIGGS BOSON , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 36 No. 138 (2012)
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Abstract
We show in this work that the generalization of the Proca action could give account of the known periods of accelerated expansion of the universe. The vector fields associated with this action, called vector Galileons, with a SU(2) symmetry and in a cosmic triad configuration, allow us to characterize an isotropic and homogeneous universe, satisfying in turn a necessary condition for the absence of the Ostrogradski instability. On the other hand, the aforementioned generalization allows us to define two artificial fluids: the Yang-Mills fluid which corresponds to a kinetic term with positive energy density, and the vector Galileon fluid with negative energy density, offering a new scenario for the description of the accelerated expansion of the universe. In this work we study the cosmological consequences of one of the pieces of the generalized Proca action built from the tensor, which is the symmetric version of the gauge field strength tensor .The primordial inflation is identified with a couple of saddle points of the obtained dynamical system for this model; unfortunately the length of this period is highly sensitive to the initial conditions. On the other hand, the late accelerated expansion epoch could be successfully reproduced thanks to an interesting self-finetuning mechanism of the dynamical system variables.
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