6 papers
Generalizing the interacting dilatonic ghost condensate as a dark energy model
Manuel Gonzalez-Espinoza, Ramon Herrera, Johan Casimiro
In this article, we study the cosmic evolution of a generalized dilatonic ghost condensate field as a dark energy candidate, formulated from a Lagrangian density with two dominant…
Gravitational Wave Propagation in K-essence Cosmology: Theory and Observational Constraints
Sougata Bhunia, Eduardo Guendelman, Debashis Gangopadhyay +3
Gravitational waves (GWs) provide a powerful, theory-independent probe of the dynamical structure of spacetime and the cosmological background. We investigate the propagation of li…
Reconstructing inflation in Einstein-Gauss-Bonnet gravity in light of ACT data
Ramón Herrera, Carlos Ríos
During the inflationary epoch, we investigate the reconstruction of the background variables within the framework of Einstein-Gauss-Bonnet gravity, considering the scalar spectral…
Reconstructing inflation in a generalized Rastall theory of gravity
Ramon Herrera, Carlos Rios
We investigate the reconstruction of standard and generalized Rastall gravity inflationary models, using the scalar spectral index and the Rastall parameter expressed as functions…
Reconstructing inflation and reheating in the framework of a generalized Friedmann equation
Ramon Herrera, Carlos Rios
The reconstruction of an inflationary universe considering the parametrization of the scalar spectral index as a function of the number of folds in the framework of a modified…
Speed of sound and scalar spectral index: Reconstructing inflation and reheating in a non-canonical theory
Ramon Herrera, Carlos Rios
In this article we analyze the reconstruction of inflation in the framework of a non-canonical theory. In this sense, we study the viability of reconstructing the background variab…