Showing 2026Show all
3 papers · 1 filter
gr-qc2026
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…
gr-qc2026
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…
gr-qc2026
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…